Home / 10,387.85-14,335.28-5,672.13

Finding the Fourth Proportional to 10,387.85, 14,335.28 and 5,672.13

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Solution

The fourth proportional to 10,387.85, 14,335.28 and 5,672.13 is: 7,827.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,387.85 : 14,335.28 = 5,672.13 : x
  2. Step 2: Convert to fraction form
    10,387.85/14,335.28 = 5,672.13/x
  3. Step 3: Cross multiply
    10,387.85x = 14,335.28 × 5,672.13
  4. Step 4: Simplify right side
    10,387.85x = 81,311,510.90
  5. Step 5: Solve for x
    x = 81,311,510.90/10,387.85
  6. Step 6: Final answer
    x = 7,827.56

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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.