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Finding the Fourth Proportional to 18,737.22, 28,107.05 and 5,590.92

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Solution

The fourth proportional to 18,737.22, 28,107.05 and 5,590.92 is: 8,386.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,737.22 : 28,107.05 = 5,590.92 : x
  2. Step 2: Convert to fraction form
    18,737.22/28,107.05 = 5,590.92/x
  3. Step 3: Cross multiply
    18,737.22x = 28,107.05 × 5,590.92
  4. Step 4: Simplify right side
    18,737.22x = 157,144,240.03
  5. Step 5: Solve for x
    x = 157,144,240.03/18,737.22
  6. Step 6: Final answer
    x = 8,386.74

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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.