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Finding the Fourth Proportional to 10,371.43, 14,315.79 and 6,393.79

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Solution

The fourth proportional to 10,371.43, 14,315.79 and 6,393.79 is: 8,825.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,371.43 : 14,315.79 = 6,393.79 : x
  2. Step 2: Convert to fraction form
    10,371.43/14,315.79 = 6,393.79/x
  3. Step 3: Cross multiply
    10,371.43x = 14,315.79 × 6,393.79
  4. Step 4: Simplify right side
    10,371.43x = 91,532,154.94
  5. Step 5: Solve for x
    x = 91,532,154.94/10,371.43
  6. Step 6: Final answer
    x = 8,825.41

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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.