Home / 10,456.91-15,685.18-4,216.79

Finding the Fourth Proportional to 10,456.91, 15,685.18 and 4,216.79

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Solution

The fourth proportional to 10,456.91, 15,685.18 and 4,216.79 is: 6,325.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,456.91 : 15,685.18 = 4,216.79 : x
  2. Step 2: Convert to fraction form
    10,456.91/15,685.18 = 4,216.79/x
  3. Step 3: Cross multiply
    10,456.91x = 15,685.18 × 4,216.79
  4. Step 4: Simplify right side
    10,456.91x = 66,141,138.84
  5. Step 5: Solve for x
    x = 66,141,138.84/10,456.91
  6. Step 6: Final answer
    x = 6,325.11

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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.