Home / 38,515.55-53,149.50-21,516.39

Finding the Fourth Proportional to 38,515.55, 53,149.50 and 21,516.39

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Solution

The fourth proportional to 38,515.55, 53,149.50 and 21,516.39 is: 29,691.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,515.55 : 53,149.50 = 21,516.39 : x
  2. Step 2: Convert to fraction form
    38,515.55/53,149.50 = 21,516.39/x
  3. Step 3: Cross multiply
    38,515.55x = 53,149.50 × 21,516.39
  4. Step 4: Simplify right side
    38,515.55x = 1,143,585,370.31
  5. Step 5: Solve for x
    x = 1,143,585,370.31/38,515.55
  6. Step 6: Final answer
    x = 29,691.53

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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.