Home / 38,146.55-52,645.34-21,156.12

Finding the Fourth Proportional to 38,146.55, 52,645.34 and 21,156.12

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Solution

The fourth proportional to 38,146.55, 52,645.34 and 21,156.12 is: 29,197.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,146.55 : 52,645.34 = 21,156.12 : x
  2. Step 2: Convert to fraction form
    38,146.55/52,645.34 = 21,156.12/x
  3. Step 3: Cross multiply
    38,146.55x = 52,645.34 × 21,156.12
  4. Step 4: Simplify right side
    38,146.55x = 1,113,771,183.37
  5. Step 5: Solve for x
    x = 1,113,771,183.37/38,146.55
  6. Step 6: Final answer
    x = 29,197.17

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Half scale
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Double scale
Find fourth proportional to 38,147.55, 52,646.72 and 21,157.12
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.