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Finding the Fourth Proportional to 18,737.65, 28,098.24 and 9,970.48

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Solution

The fourth proportional to 18,737.65, 28,098.24 and 9,970.48 is: 14,951.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,737.65 : 28,098.24 = 9,970.48 : x
  2. Step 2: Convert to fraction form
    18,737.65/28,098.24 = 9,970.48/x
  3. Step 3: Cross multiply
    18,737.65x = 28,098.24 × 9,970.48
  4. Step 4: Simplify right side
    18,737.65x = 280,152,832.32
  5. Step 5: Solve for x
    x = 280,152,832.32/18,737.65
  6. Step 6: Final answer
    x = 14,951.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.