Home / 10,872.98-15,007.67-6,398.17

Finding the Fourth Proportional to 10,872.98, 15,007.67 and 6,398.17

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Solution

The fourth proportional to 10,872.98, 15,007.67 and 6,398.17 is: 8,831.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,872.98 : 15,007.67 = 6,398.17 : x
  2. Step 2: Convert to fraction form
    10,872.98/15,007.67 = 6,398.17/x
  3. Step 3: Cross multiply
    10,872.98x = 15,007.67 × 6,398.17
  4. Step 4: Simplify right side
    10,872.98x = 96,021,591.97
  5. Step 5: Solve for x
    x = 96,021,591.97/10,872.98
  6. Step 6: Final answer
    x = 8,831.21

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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.