Home / 10,433.28-15,631.70-8,689.52

Finding the Fourth Proportional to 10,433.28, 15,631.70 and 8,689.52

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Solution

The fourth proportional to 10,433.28, 15,631.70 and 8,689.52 is: 13,019.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,433.28 : 15,631.70 = 8,689.52 : x
  2. Step 2: Convert to fraction form
    10,433.28/15,631.70 = 8,689.52/x
  3. Step 3: Cross multiply
    10,433.28x = 15,631.70 × 8,689.52
  4. Step 4: Simplify right side
    10,433.28x = 135,831,969.78
  5. Step 5: Solve for x
    x = 135,831,969.78/10,433.28
  6. Step 6: Final answer
    x = 13,019.11

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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.