Home / 10,378.92-15,531.16-9,683.76

Finding the Fourth Proportional to 10,378.92, 15,531.16 and 9,683.76

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Solution

The fourth proportional to 10,378.92, 15,531.16 and 9,683.76 is: 14,490.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,378.92 : 15,531.16 = 9,683.76 : x
  2. Step 2: Convert to fraction form
    10,378.92/15,531.16 = 9,683.76/x
  3. Step 3: Cross multiply
    10,378.92x = 15,531.16 × 9,683.76
  4. Step 4: Simplify right side
    10,378.92x = 150,400,025.96
  5. Step 5: Solve for x
    x = 150,400,025.96/10,378.92
  6. Step 6: Final answer
    x = 14,490.91

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1.5x scale

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.