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Finding the Fourth Proportional to 13,008.76, 17,952.13 and 7,040.43

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Solution

The fourth proportional to 13,008.76, 17,952.13 and 7,040.43 is: 9,715.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,008.76 : 17,952.13 = 7,040.43 : x
  2. Step 2: Convert to fraction form
    13,008.76/17,952.13 = 7,040.43/x
  3. Step 3: Cross multiply
    13,008.76x = 17,952.13 × 7,040.43
  4. Step 4: Simplify right side
    13,008.76x = 126,390,624.86
  5. Step 5: Solve for x
    x = 126,390,624.86/13,008.76
  6. Step 6: Final answer
    x = 9,715.81

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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.