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Finding the Fourth Proportional to 17,145.40, 25,715.94 and 9,347.80

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Solution

The fourth proportional to 17,145.40, 25,715.94 and 9,347.80 is: 14,020.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,145.40 : 25,715.94 = 9,347.80 : x
  2. Step 2: Convert to fraction form
    17,145.40/25,715.94 = 9,347.80/x
  3. Step 3: Cross multiply
    17,145.40x = 25,715.94 × 9,347.80
  4. Step 4: Simplify right side
    17,145.40x = 240,387,463.93
  5. Step 5: Solve for x
    x = 240,387,463.93/17,145.40
  6. Step 6: Final answer
    x = 14,020.52

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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.