Home / 28,500.86-39,331.09-15,925.61

Finding the Fourth Proportional to 28,500.86, 39,331.09 and 15,925.61

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Solution

The fourth proportional to 28,500.86, 39,331.09 and 15,925.61 is: 21,977.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,500.86 : 39,331.09 = 15,925.61 : x
  2. Step 2: Convert to fraction form
    28,500.86/39,331.09 = 15,925.61/x
  3. Step 3: Cross multiply
    28,500.86x = 39,331.09 × 15,925.61
  4. Step 4: Simplify right side
    28,500.86x = 626,371,600.21
  5. Step 5: Solve for x
    x = 626,371,600.21/28,500.86
  6. Step 6: Final answer
    x = 21,977.29

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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.