Home / 28,737.06-39,656.14-15,815.13

Finding the Fourth Proportional to 28,737.06, 39,656.14 and 15,815.13

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Solution

The fourth proportional to 28,737.06, 39,656.14 and 15,815.13 is: 21,824.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,737.06 : 39,656.14 = 15,815.13 : x
  2. Step 2: Convert to fraction form
    28,737.06/39,656.14 = 15,815.13/x
  3. Step 3: Cross multiply
    28,737.06x = 39,656.14 × 15,815.13
  4. Step 4: Simplify right side
    28,737.06x = 627,166,821.15
  5. Step 5: Solve for x
    x = 627,166,821.15/28,737.06
  6. Step 6: Final answer
    x = 21,824.32

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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.