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Finding the Fourth Proportional to 18,737.09, 28,097.39 and 9,969.92

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Solution

The fourth proportional to 18,737.09, 28,097.39 and 9,969.92 is: 14,950.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,737.09 : 28,097.39 = 9,969.92 : x
  2. Step 2: Convert to fraction form
    18,737.09/28,097.39 = 9,969.92/x
  3. Step 3: Cross multiply
    18,737.09x = 28,097.39 × 9,969.92
  4. Step 4: Simplify right side
    18,737.09x = 280,128,540.17
  5. Step 5: Solve for x
    x = 280,128,540.17/18,737.09
  6. Step 6: Final answer
    x = 14,950.49

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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.