Home / 10,521.16-15,785.20-3,858.92

Finding the Fourth Proportional to 10,521.16, 15,785.20 and 3,858.92

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Solution

The fourth proportional to 10,521.16, 15,785.20 and 3,858.92 is: 5,789.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,521.16 : 15,785.20 = 3,858.92 : x
  2. Step 2: Convert to fraction form
    10,521.16/15,785.20 = 3,858.92/x
  3. Step 3: Cross multiply
    10,521.16x = 15,785.20 × 3,858.92
  4. Step 4: Simplify right side
    10,521.16x = 60,913,853.80
  5. Step 5: Solve for x
    x = 60,913,853.80/10,521.16
  6. Step 6: Final answer
    x = 5,789.65

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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.