Home / 21,247.20-31,827.60-10,864.80

Finding the Fourth Proportional to 21,247.20, 31,827.60 and 10,864.80

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Solution

The fourth proportional to 21,247.20, 31,827.60 and 10,864.80 is: 16,275.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.20 : 31,827.60 = 10,864.80 : x
  2. Step 2: Convert to fraction form
    21,247.20/31,827.60 = 10,864.80/x
  3. Step 3: Cross multiply
    21,247.20x = 31,827.60 × 10,864.80
  4. Step 4: Simplify right side
    21,247.20x = 345,800,508.48
  5. Step 5: Solve for x
    x = 345,800,508.48/21,247.20
  6. Step 6: Final answer
    x = 16,275.11

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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.