Home / 13,443.40-20,165.70-5,127.40

Finding the Fourth Proportional to 13,443.40, 20,165.70 and 5,127.40

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Solution

The fourth proportional to 13,443.40, 20,165.70 and 5,127.40 is: 7,691.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,443.40 : 20,165.70 = 5,127.40 : x
  2. Step 2: Convert to fraction form
    13,443.40/20,165.70 = 5,127.40/x
  3. Step 3: Cross multiply
    13,443.40x = 20,165.70 × 5,127.40
  4. Step 4: Simplify right side
    13,443.40x = 103,397,610.18
  5. Step 5: Solve for x
    x = 103,397,610.18/13,443.40
  6. Step 6: Final answer
    x = 7,691.33

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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.