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Finding the Fourth Proportional to 18,737.07, 28,112.90 and 17,206.17

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Solution

The fourth proportional to 18,737.07, 28,112.90 and 17,206.17 is: 25,815.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,737.07 : 28,112.90 = 17,206.17 : x
  2. Step 2: Convert to fraction form
    18,737.07/28,112.90 = 17,206.17/x
  3. Step 3: Cross multiply
    18,737.07x = 28,112.90 × 17,206.17
  4. Step 4: Simplify right side
    18,737.07x = 483,715,250.56
  5. Step 5: Solve for x
    x = 483,715,250.56/18,737.07
  6. Step 6: Final answer
    x = 25,815.95

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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.