Home / 28,761.79-43,049.73-17,690.71

Finding the Fourth Proportional to 28,761.79, 43,049.73 and 17,690.71

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Solution

The fourth proportional to 28,761.79, 43,049.73 and 17,690.71 is: 26,478.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,761.79 : 43,049.73 = 17,690.71 : x
  2. Step 2: Convert to fraction form
    28,761.79/43,049.73 = 17,690.71/x
  3. Step 3: Cross multiply
    28,761.79x = 43,049.73 × 17,690.71
  4. Step 4: Simplify right side
    28,761.79x = 761,580,289.01
  5. Step 5: Solve for x
    x = 761,580,289.01/28,761.79
  6. Step 6: Final answer
    x = 26,478.89

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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.