Home / 21,187.24-31,775.49-8,710.71

Finding the Fourth Proportional to 21,187.24, 31,775.49 and 8,710.71

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Solution

The fourth proportional to 21,187.24, 31,775.49 and 8,710.71 is: 13,063.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.24 : 31,775.49 = 8,710.71 : x
  2. Step 2: Convert to fraction form
    21,187.24/31,775.49 = 8,710.71/x
  3. Step 3: Cross multiply
    21,187.24x = 31,775.49 × 8,710.71
  4. Step 4: Simplify right side
    21,187.24x = 276,787,078.50
  5. Step 5: Solve for x
    x = 276,787,078.50/21,187.24
  6. Step 6: Final answer
    x = 13,063.86

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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.