Home / 28,593.40-39,458.42-15,672.55

Finding the Fourth Proportional to 28,593.40, 39,458.42 and 15,672.55

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Solution

The fourth proportional to 28,593.40, 39,458.42 and 15,672.55 is: 21,627.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,593.40 : 39,458.42 = 15,672.55 : x
  2. Step 2: Convert to fraction form
    28,593.40/39,458.42 = 15,672.55/x
  3. Step 3: Cross multiply
    28,593.40x = 39,458.42 × 15,672.55
  4. Step 4: Simplify right side
    28,593.40x = 618,413,982.01
  5. Step 5: Solve for x
    x = 618,413,982.01/28,593.40
  6. Step 6: Final answer
    x = 21,627.86

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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.