Home / 38,515.42-53,146.05-21,517.57

Finding the Fourth Proportional to 38,515.42, 53,146.05 and 21,517.57

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Solution

The fourth proportional to 38,515.42, 53,146.05 and 21,517.57 is: 29,691.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,515.42 : 53,146.05 = 21,517.57 : x
  2. Step 2: Convert to fraction form
    38,515.42/53,146.05 = 21,517.57/x
  3. Step 3: Cross multiply
    38,515.42x = 53,146.05 × 21,517.57
  4. Step 4: Simplify right side
    38,515.42x = 1,143,573,851.10
  5. Step 5: Solve for x
    x = 1,143,573,851.10/38,515.42
  6. Step 6: Final answer
    x = 29,691.32

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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.