Home / 10,387.74-14,335.14-5,672.12

Finding the Fourth Proportional to 10,387.74, 14,335.14 and 5,672.12

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Solution

The fourth proportional to 10,387.74, 14,335.14 and 5,672.12 is: 7,827.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,387.74 : 14,335.14 = 5,672.12 : x
  2. Step 2: Convert to fraction form
    10,387.74/14,335.14 = 5,672.12/x
  3. Step 3: Cross multiply
    10,387.74x = 14,335.14 × 5,672.12
  4. Step 4: Simplify right side
    10,387.74x = 81,310,634.30
  5. Step 5: Solve for x
    x = 81,310,634.30/10,387.74
  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.