Home / 10,451.91-15,678.48-4,211.88

Finding the Fourth Proportional to 10,451.91, 15,678.48 and 4,211.88

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Solution

The fourth proportional to 10,451.91, 15,678.48 and 4,211.88 is: 6,318.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,451.91 : 15,678.48 = 4,211.88 : x
  2. Step 2: Convert to fraction form
    10,451.91/15,678.48 = 4,211.88/x
  3. Step 3: Cross multiply
    10,451.91x = 15,678.48 × 4,211.88
  4. Step 4: Simplify right side
    10,451.91x = 66,035,876.34
  5. Step 5: Solve for x
    x = 66,035,876.34/10,451.91
  6. Step 6: Final answer
    x = 6,318.07

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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.