Home / 21,251.43-31,876.34-5,668.92

Finding the Fourth Proportional to 21,251.43, 31,876.34 and 5,668.92

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Solution

The fourth proportional to 21,251.43, 31,876.34 and 5,668.92 is: 8,503.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,251.43 : 31,876.34 = 5,668.92 : x
  2. Step 2: Convert to fraction form
    21,251.43/31,876.34 = 5,668.92/x
  3. Step 3: Cross multiply
    21,251.43x = 31,876.34 × 5,668.92
  4. Step 4: Simplify right side
    21,251.43x = 180,704,393.01
  5. Step 5: Solve for x
    x = 180,704,393.01/21,251.43
  6. Step 6: Final answer
    x = 8,503.16

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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.