Home / 10,951.29-15,121.64-10,400.90

Finding the Fourth Proportional to 10,951.29, 15,121.64 and 10,400.90

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Solution

The fourth proportional to 10,951.29, 15,121.64 and 10,400.90 is: 14,361.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,951.29 : 15,121.64 = 10,400.90 : x
  2. Step 2: Convert to fraction form
    10,951.29/15,121.64 = 10,400.90/x
  3. Step 3: Cross multiply
    10,951.29x = 15,121.64 × 10,400.90
  4. Step 4: Simplify right side
    10,951.29x = 157,278,537.86
  5. Step 5: Solve for x
    x = 157,278,537.86/10,951.29
  6. Step 6: Final answer
    x = 14,361.64

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1.5x scale

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.