Home / 13,869.38-19,139.34-7,581.76

Finding the Fourth Proportional to 13,869.38, 19,139.34 and 7,581.76

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Solution

The fourth proportional to 13,869.38, 19,139.34 and 7,581.76 is: 10,462.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.38 : 19,139.34 = 7,581.76 : x
  2. Step 2: Convert to fraction form
    13,869.38/19,139.34 = 7,581.76/x
  3. Step 3: Cross multiply
    13,869.38x = 19,139.34 × 7,581.76
  4. Step 4: Simplify right side
    13,869.38x = 145,109,882.44
  5. Step 5: Solve for x
    x = 145,109,882.44/13,869.38
  6. Step 6: Final answer
    x = 10,462.61

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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.