Home / 10,932.90-15,084.81-6,219.78

Finding the Fourth Proportional to 10,932.90, 15,084.81 and 6,219.78

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Solution

The fourth proportional to 10,932.90, 15,084.81 and 6,219.78 is: 8,581.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,932.90 : 15,084.81 = 6,219.78 : x
  2. Step 2: Convert to fraction form
    10,932.90/15,084.81 = 6,219.78/x
  3. Step 3: Cross multiply
    10,932.90x = 15,084.81 × 6,219.78
  4. Step 4: Simplify right side
    10,932.90x = 93,824,199.54
  5. Step 5: Solve for x
    x = 93,824,199.54/10,932.90
  6. Step 6: Final answer
    x = 8,581.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.