Home / 13,330.50-19,958.76-8,655.90

Finding the Fourth Proportional to 13,330.50, 19,958.76 and 8,655.90

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Solution

The fourth proportional to 13,330.50, 19,958.76 and 8,655.90 is: 12,959.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,330.50 : 19,958.76 = 8,655.90 : x
  2. Step 2: Convert to fraction form
    13,330.50/19,958.76 = 8,655.90/x
  3. Step 3: Cross multiply
    13,330.50x = 19,958.76 × 8,655.90
  4. Step 4: Simplify right side
    13,330.50x = 172,761,030.68
  5. Step 5: Solve for x
    x = 172,761,030.68/13,330.50
  6. Step 6: Final answer
    x = 12,959.83

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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.