Home / 15,275.27-21,079.68-8,560.87

Finding the Fourth Proportional to 15,275.27, 21,079.68 and 8,560.87

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Solution

The fourth proportional to 15,275.27, 21,079.68 and 8,560.87 is: 11,813.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,275.27 : 21,079.68 = 8,560.87 : x
  2. Step 2: Convert to fraction form
    15,275.27/21,079.68 = 8,560.87/x
  3. Step 3: Cross multiply
    15,275.27x = 21,079.68 × 8,560.87
  4. Step 4: Simplify right side
    15,275.27x = 180,460,400.12
  5. Step 5: Solve for x
    x = 180,460,400.12/15,275.27
  6. Step 6: Final answer
    x = 11,813.89

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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.