Home / 19,770.48-29,633.85-13,187.61

Finding the Fourth Proportional to 19,770.48, 29,633.85 and 13,187.61

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Solution

The fourth proportional to 19,770.48, 29,633.85 and 13,187.61 is: 19,766.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,770.48 : 29,633.85 = 13,187.61 : x
  2. Step 2: Convert to fraction form
    19,770.48/29,633.85 = 13,187.61/x
  3. Step 3: Cross multiply
    19,770.48x = 29,633.85 × 13,187.61
  4. Step 4: Simplify right side
    19,770.48x = 390,799,656.60
  5. Step 5: Solve for x
    x = 390,799,656.60/19,770.48
  6. Step 6: Final answer
    x = 19,766.83

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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.