Home / 28,737.87-39,657.63-16,638.86

Finding the Fourth Proportional to 28,737.87, 39,657.63 and 16,638.86

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Solution

The fourth proportional to 28,737.87, 39,657.63 and 16,638.86 is: 22,961.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,737.87 : 39,657.63 = 16,638.86 : x
  2. Step 2: Convert to fraction form
    28,737.87/39,657.63 = 16,638.86/x
  3. Step 3: Cross multiply
    28,737.87x = 39,657.63 × 16,638.86
  4. Step 4: Simplify right side
    28,737.87x = 659,857,753.50
  5. Step 5: Solve for x
    x = 659,857,753.50/28,737.87
  6. Step 6: Final answer
    x = 22,961.26

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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.