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Finding the Fourth Proportional to 13,443.11, 20,168.07 and 7,901.12

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Solution

The fourth proportional to 13,443.11, 20,168.07 and 7,901.12 is: 11,853.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,443.11 : 20,168.07 = 7,901.12 : x
  2. Step 2: Convert to fraction form
    13,443.11/20,168.07 = 7,901.12/x
  3. Step 3: Cross multiply
    13,443.11x = 20,168.07 × 7,901.12
  4. Step 4: Simplify right side
    13,443.11x = 159,350,240.40
  5. Step 5: Solve for x
    x = 159,350,240.40/13,443.11
  6. Step 6: Final answer
    x = 11,853.68

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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.