Home / 13,031.28-19,543.20-3,670.68

Finding the Fourth Proportional to 13,031.28, 19,543.20 and 3,670.68

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Solution

The fourth proportional to 13,031.28, 19,543.20 and 3,670.68 is: 5,504.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,031.28 : 19,543.20 = 3,670.68 : x
  2. Step 2: Convert to fraction form
    13,031.28/19,543.20 = 3,670.68/x
  3. Step 3: Cross multiply
    13,031.28x = 19,543.20 × 3,670.68
  4. Step 4: Simplify right side
    13,031.28x = 71,736,833.38
  5. Step 5: Solve for x
    x = 71,736,833.38/13,031.28
  6. Step 6: Final answer
    x = 5,504.97

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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.