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Finding the Fourth Proportional to 28,737.42, 43,099.86 and 9,013.38

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Solution

The fourth proportional to 28,737.42, 43,099.86 and 9,013.38 is: 13,518.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,737.42 : 43,099.86 = 9,013.38 : x
  2. Step 2: Convert to fraction form
    28,737.42/43,099.86 = 9,013.38/x
  3. Step 3: Cross multiply
    28,737.42x = 43,099.86 × 9,013.38
  4. Step 4: Simplify right side
    28,737.42x = 388,475,416.13
  5. Step 5: Solve for x
    x = 388,475,416.13/28,737.42
  6. Step 6: Final answer
    x = 13,518.10

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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.