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Finding the Fourth Proportional to 18,751.59, 28,127.90 and 6,269.29

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Solution

The fourth proportional to 18,751.59, 28,127.90 and 6,269.29 is: 9,404.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,751.59 : 28,127.90 = 6,269.29 : x
  2. Step 2: Convert to fraction form
    18,751.59/28,127.90 = 6,269.29/x
  3. Step 3: Cross multiply
    18,751.59x = 28,127.90 × 6,269.29
  4. Step 4: Simplify right side
    18,751.59x = 176,341,823.91
  5. Step 5: Solve for x
    x = 176,341,823.91/18,751.59
  6. Step 6: Final answer
    x = 9,404.10

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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.