Home / 15,869.76-23,787.90-5,329.80

Finding the Fourth Proportional to 15,869.76, 23,787.90 and 5,329.80

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Solution

The fourth proportional to 15,869.76, 23,787.90 and 5,329.80 is: 7,989.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,869.76 : 23,787.90 = 5,329.80 : x
  2. Step 2: Convert to fraction form
    15,869.76/23,787.90 = 5,329.80/x
  3. Step 3: Cross multiply
    15,869.76x = 23,787.90 × 5,329.80
  4. Step 4: Simplify right side
    15,869.76x = 126,784,749.42
  5. Step 5: Solve for x
    x = 126,784,749.42/15,869.76
  6. Step 6: Final answer
    x = 7,989.08

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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.