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Finding the Fourth Proportional to 15,151.70, 22,737.94 and 5,290.99

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Solution

The fourth proportional to 15,151.70, 22,737.94 and 5,290.99 is: 7,940.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,151.70 : 22,737.94 = 5,290.99 : x
  2. Step 2: Convert to fraction form
    15,151.70/22,737.94 = 5,290.99/x
  3. Step 3: Cross multiply
    15,151.70x = 22,737.94 × 5,290.99
  4. Step 4: Simplify right side
    15,151.70x = 120,306,143.09
  5. Step 5: Solve for x
    x = 120,306,143.09/15,151.70
  6. Step 6: Final answer
    x = 7,940.11

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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.