Home / 10,215.28-15,320.96-3,641.68

Finding the Fourth Proportional to 10,215.28, 15,320.96 and 3,641.68

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Solution

The fourth proportional to 10,215.28, 15,320.96 and 3,641.68 is: 5,461.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,215.28 : 15,320.96 = 3,641.68 : x
  2. Step 2: Convert to fraction form
    10,215.28/15,320.96 = 3,641.68/x
  3. Step 3: Cross multiply
    10,215.28x = 15,320.96 × 3,641.68
  4. Step 4: Simplify right side
    10,215.28x = 55,794,033.61
  5. Step 5: Solve for x
    x = 55,794,033.61/10,215.28
  6. Step 6: Final answer
    x = 5,461.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.