Home / 10,390.92-15,566.40-8,705.04

Finding the Fourth Proportional to 10,390.92, 15,566.40 and 8,705.04

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Solution

The fourth proportional to 10,390.92, 15,566.40 and 8,705.04 is: 13,040.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,390.92 : 15,566.40 = 8,705.04 : x
  2. Step 2: Convert to fraction form
    10,390.92/15,566.40 = 8,705.04/x
  3. Step 3: Cross multiply
    10,390.92x = 15,566.40 × 8,705.04
  4. Step 4: Simplify right side
    10,390.92x = 135,506,134.66
  5. Step 5: Solve for x
    x = 135,506,134.66/10,390.92
  6. Step 6: Final answer
    x = 13,040.82

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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.