Home / 25,939.20-38,902.65-11,890.47

Finding the Fourth Proportional to 25,939.20, 38,902.65 and 11,890.47

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Solution

The fourth proportional to 25,939.20, 38,902.65 and 11,890.47 is: 17,832.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,939.20 : 38,902.65 = 11,890.47 : x
  2. Step 2: Convert to fraction form
    25,939.20/38,902.65 = 11,890.47/x
  3. Step 3: Cross multiply
    25,939.20x = 38,902.65 × 11,890.47
  4. Step 4: Simplify right side
    25,939.20x = 462,570,792.75
  5. Step 5: Solve for x
    x = 462,570,792.75/25,939.20
  6. Step 6: Final answer
    x = 17,832.89

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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.