Home / 38,153.68-52,651.10-21,157.65

Finding the Fourth Proportional to 38,153.68, 52,651.10 and 21,157.65

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Solution

The fourth proportional to 38,153.68, 52,651.10 and 21,157.65 is: 29,197.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,153.68 : 52,651.10 = 21,157.65 : x
  2. Step 2: Convert to fraction form
    38,153.68/52,651.10 = 21,157.65/x
  3. Step 3: Cross multiply
    38,153.68x = 52,651.10 × 21,157.65
  4. Step 4: Simplify right side
    38,153.68x = 1,113,973,440.13
  5. Step 5: Solve for x
    x = 1,113,973,440.13/38,153.68
  6. Step 6: Final answer
    x = 29,197.01

Related Problems

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Half scale
Find fourth proportional to 76,307.36, 105,302.19 and 42,315.30
Double scale
Find fourth proportional to 38,154.68, 52,652.47 and 21,158.65
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.