Home / 21,249.36-31,862.30-8,587.71

Finding the Fourth Proportional to 21,249.36, 31,862.30 and 8,587.71

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Solution

The fourth proportional to 21,249.36, 31,862.30 and 8,587.71 is: 12,876.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,249.36 : 31,862.30 = 8,587.71 : x
  2. Step 2: Convert to fraction form
    21,249.36/31,862.30 = 8,587.71/x
  3. Step 3: Cross multiply
    21,249.36x = 31,862.30 × 8,587.71
  4. Step 4: Simplify right side
    21,249.36x = 273,624,149.39
  5. Step 5: Solve for x
    x = 273,624,149.39/21,249.36
  6. Step 6: Final answer
    x = 12,876.82

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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.