Home / 13,583.28-18,743.76-8,279.76

Finding the Fourth Proportional to 13,583.28, 18,743.76 and 8,279.76

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Solution

The fourth proportional to 13,583.28, 18,743.76 and 8,279.76 is: 11,425.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,583.28 : 18,743.76 = 8,279.76 : x
  2. Step 2: Convert to fraction form
    13,583.28/18,743.76 = 8,279.76/x
  3. Step 3: Cross multiply
    13,583.28x = 18,743.76 × 8,279.76
  4. Step 4: Simplify right side
    13,583.28x = 155,193,834.30
  5. Step 5: Solve for x
    x = 155,193,834.30/13,583.28
  6. Step 6: Final answer
    x = 11,425.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.