Home / 15,275.27-21,079.69-8,560.88

Finding the Fourth Proportional to 15,275.27, 21,079.69 and 8,560.88

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Solution

The fourth proportional to 15,275.27, 21,079.69 and 8,560.88 is: 11,813.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,275.27 : 21,079.69 = 8,560.88 : x
  2. Step 2: Convert to fraction form
    15,275.27/21,079.69 = 8,560.88/x
  3. Step 3: Cross multiply
    15,275.27x = 21,079.69 × 8,560.88
  4. Step 4: Simplify right side
    15,275.27x = 180,460,569.73
  5. Step 5: Solve for x
    x = 180,460,569.73/15,275.27
  6. Step 6: Final answer
    x = 11,813.91

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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.