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Finding the Fourth Proportional to 18,735.17, 28,099.15 and 8,737.16

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Solution

The fourth proportional to 18,735.17, 28,099.15 and 8,737.16 is: 13,104.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,735.17 : 28,099.15 = 8,737.16 : x
  2. Step 2: Convert to fraction form
    18,735.17/28,099.15 = 8,737.16/x
  3. Step 3: Cross multiply
    18,735.17x = 28,099.15 × 8,737.16
  4. Step 4: Simplify right side
    18,735.17x = 245,506,769.41
  5. Step 5: Solve for x
    x = 245,506,769.41/18,735.17
  6. Step 6: Final answer
    x = 13,104.06

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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.