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Finding the Fourth Proportional to 18,737.78, 28,106.67 and 5,599.38

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Solution

The fourth proportional to 18,737.78, 28,106.67 and 5,599.38 is: 8,399.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,737.78 : 28,106.67 = 5,599.38 : x
  2. Step 2: Convert to fraction form
    18,737.78/28,106.67 = 5,599.38/x
  3. Step 3: Cross multiply
    18,737.78x = 28,106.67 × 5,599.38
  4. Step 4: Simplify right side
    18,737.78x = 157,379,925.86
  5. Step 5: Solve for x
    x = 157,379,925.86/18,737.78
  6. Step 6: Final answer
    x = 8,399.07

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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.