Home / 38,154.18-52,651.78-21,158.15

Finding the Fourth Proportional to 38,154.18, 52,651.78 and 21,158.15

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Solution

The fourth proportional to 38,154.18, 52,651.78 and 21,158.15 is: 29,197.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,154.18 : 52,651.78 = 21,158.15 : x
  2. Step 2: Convert to fraction form
    38,154.18/52,651.78 = 21,158.15/x
  3. Step 3: Cross multiply
    38,154.18x = 52,651.78 × 21,158.15
  4. Step 4: Simplify right side
    38,154.18x = 1,114,014,259.01
  5. Step 5: Solve for x
    x = 1,114,014,259.01/38,154.18
  6. Step 6: Final answer
    x = 29,197.70

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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.