Home / 19,770.30-29,666.39-8,091.72

Finding the Fourth Proportional to 19,770.30, 29,666.39 and 8,091.72

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Solution

The fourth proportional to 19,770.30, 29,666.39 and 8,091.72 is: 12,142.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,770.30 : 29,666.39 = 8,091.72 : x
  2. Step 2: Convert to fraction form
    19,770.30/29,666.39 = 8,091.72/x
  3. Step 3: Cross multiply
    19,770.30x = 29,666.39 × 8,091.72
  4. Step 4: Simplify right side
    19,770.30x = 240,052,121.29
  5. Step 5: Solve for x
    x = 240,052,121.29/19,770.30
  6. Step 6: Final answer
    x = 12,142.06

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1.5x scale

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.