Home / 19,279.28-28,856.04-10,381.88

Finding the Fourth Proportional to 19,279.28, 28,856.04 and 10,381.88

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Solution

The fourth proportional to 19,279.28, 28,856.04 and 10,381.88 is: 15,538.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,279.28 : 28,856.04 = 10,381.88 : x
  2. Step 2: Convert to fraction form
    19,279.28/28,856.04 = 10,381.88/x
  3. Step 3: Cross multiply
    19,279.28x = 28,856.04 × 10,381.88
  4. Step 4: Simplify right side
    19,279.28x = 299,579,944.56
  5. Step 5: Solve for x
    x = 299,579,944.56/19,279.28
  6. Step 6: Final answer
    x = 15,538.96

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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.