Home / 15,438.46-23,138.71-8,780.54

Finding the Fourth Proportional to 15,438.46, 23,138.71 and 8,780.54

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Solution

The fourth proportional to 15,438.46, 23,138.71 and 8,780.54 is: 13,160.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,438.46 : 23,138.71 = 8,780.54 : x
  2. Step 2: Convert to fraction form
    15,438.46/23,138.71 = 8,780.54/x
  3. Step 3: Cross multiply
    15,438.46x = 23,138.71 × 8,780.54
  4. Step 4: Simplify right side
    15,438.46x = 203,170,368.70
  5. Step 5: Solve for x
    x = 203,170,368.70/15,438.46
  6. Step 6: Final answer
    x = 13,160.02

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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.