Home / 13,387.28-20,081.12-5,071.14

Finding the Fourth Proportional to 13,387.28, 20,081.12 and 5,071.14

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Solution

The fourth proportional to 13,387.28, 20,081.12 and 5,071.14 is: 7,606.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.28 : 20,081.12 = 5,071.14 : x
  2. Step 2: Convert to fraction form
    13,387.28/20,081.12 = 5,071.14/x
  3. Step 3: Cross multiply
    13,387.28x = 20,081.12 × 5,071.14
  4. Step 4: Simplify right side
    13,387.28x = 101,834,145.52
  5. Step 5: Solve for x
    x = 101,834,145.52/13,387.28
  6. Step 6: Final answer
    x = 7,606.79

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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.