Home / 31,368.05-43,287.98-17,221.80

Finding the Fourth Proportional to 31,368.05, 43,287.98 and 17,221.80

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Solution

The fourth proportional to 31,368.05, 43,287.98 and 17,221.80 is: 23,766.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,368.05 : 43,287.98 = 17,221.80 : x
  2. Step 2: Convert to fraction form
    31,368.05/43,287.98 = 17,221.80/x
  3. Step 3: Cross multiply
    31,368.05x = 43,287.98 × 17,221.80
  4. Step 4: Simplify right side
    31,368.05x = 745,496,847.86
  5. Step 5: Solve for x
    x = 745,496,847.86/31,368.05
  6. Step 6: Final answer
    x = 23,766.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.