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Finding the Fourth Proportional to 9,543.79, 14,239.11 and 8,491.29

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Solution

The fourth proportional to 9,543.79, 14,239.11 and 8,491.29 is: 12,668.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,543.79 : 14,239.11 = 8,491.29 : x
  2. Step 2: Convert to fraction form
    9,543.79/14,239.11 = 8,491.29/x
  3. Step 3: Cross multiply
    9,543.79x = 14,239.11 × 8,491.29
  4. Step 4: Simplify right side
    9,543.79x = 120,908,412.35
  5. Step 5: Solve for x
    x = 120,908,412.35/9,543.79
  6. Step 6: Final answer
    x = 12,668.80

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.