Home / 19,770.57-29,666.79-8,091.99

Finding the Fourth Proportional to 19,770.57, 29,666.79 and 8,091.99

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Solution

The fourth proportional to 19,770.57, 29,666.79 and 8,091.99 is: 12,142.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,770.57 : 29,666.79 = 8,091.99 : x
  2. Step 2: Convert to fraction form
    19,770.57/29,666.79 = 8,091.99/x
  3. Step 3: Cross multiply
    19,770.57x = 29,666.79 × 8,091.99
  4. Step 4: Simplify right side
    19,770.57x = 240,063,368.01
  5. Step 5: Solve for x
    x = 240,063,368.01/19,770.57
  6. Step 6: Final answer
    x = 12,142.46

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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.