Home / 15,905.07-23,869.89-8,515.71

Finding the Fourth Proportional to 15,905.07, 23,869.89 and 8,515.71

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Solution

The fourth proportional to 15,905.07, 23,869.89 and 8,515.71 is: 12,780.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,905.07 : 23,869.89 = 8,515.71 : x
  2. Step 2: Convert to fraction form
    15,905.07/23,869.89 = 8,515.71/x
  3. Step 3: Cross multiply
    15,905.07x = 23,869.89 × 8,515.71
  4. Step 4: Simplify right side
    15,905.07x = 203,269,060.97
  5. Step 5: Solve for x
    x = 203,269,060.97/15,905.07
  6. Step 6: Final answer
    x = 12,780.14

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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.