Home / 10,606.32-15,909.89-2,815.20

Finding the Fourth Proportional to 10,606.32, 15,909.89 and 2,815.20

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Solution

The fourth proportional to 10,606.32, 15,909.89 and 2,815.20 is: 4,222.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,606.32 : 15,909.89 = 2,815.20 : x
  2. Step 2: Convert to fraction form
    10,606.32/15,909.89 = 2,815.20/x
  3. Step 3: Cross multiply
    10,606.32x = 15,909.89 × 2,815.20
  4. Step 4: Simplify right side
    10,606.32x = 44,789,508.25
  5. Step 5: Solve for x
    x = 44,789,508.25/10,606.32
  6. Step 6: Final answer
    x = 4,222.91

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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.