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Finding the Fourth Proportional to 12,747.91, 17,590.09 and 7,368.35

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Solution

The fourth proportional to 12,747.91, 17,590.09 and 7,368.35 is: 10,167.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,747.91 : 17,590.09 = 7,368.35 : x
  2. Step 2: Convert to fraction form
    12,747.91/17,590.09 = 7,368.35/x
  3. Step 3: Cross multiply
    12,747.91x = 17,590.09 × 7,368.35
  4. Step 4: Simplify right side
    12,747.91x = 129,609,939.65
  5. Step 5: Solve for x
    x = 129,609,939.65/12,747.91
  6. Step 6: Final answer
    x = 10,167.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.