Home / 28,761.40-39,691.30-17,430.52

Finding the Fourth Proportional to 28,761.40, 39,691.30 and 17,430.52

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Solution

The fourth proportional to 28,761.40, 39,691.30 and 17,430.52 is: 24,054.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,761.40 : 39,691.30 = 17,430.52 : x
  2. Step 2: Convert to fraction form
    28,761.40/39,691.30 = 17,430.52/x
  3. Step 3: Cross multiply
    28,761.40x = 39,691.30 × 17,430.52
  4. Step 4: Simplify right side
    28,761.40x = 691,839,998.48
  5. Step 5: Solve for x
    x = 691,839,998.48/28,761.40
  6. Step 6: Final answer
    x = 24,054.46

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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.