Home / 21,046.68-31,548.06-8,561.70

Finding the Fourth Proportional to 21,046.68, 31,548.06 and 8,561.70

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Solution

The fourth proportional to 21,046.68, 31,548.06 and 8,561.70 is: 12,833.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,046.68 : 31,548.06 = 8,561.70 : x
  2. Step 2: Convert to fraction form
    21,046.68/31,548.06 = 8,561.70/x
  3. Step 3: Cross multiply
    21,046.68x = 31,548.06 × 8,561.70
  4. Step 4: Simplify right side
    21,046.68x = 270,105,025.30
  5. Step 5: Solve for x
    x = 270,105,025.30/21,046.68
  6. Step 6: Final answer
    x = 12,833.62

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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.