Home / 13,758.30-20,613.15-11,279.70

Finding the Fourth Proportional to 13,758.30, 20,613.15 and 11,279.70

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Solution

The fourth proportional to 13,758.30, 20,613.15 and 11,279.70 is: 16,899.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,758.30 : 20,613.15 = 11,279.70 : x
  2. Step 2: Convert to fraction form
    13,758.30/20,613.15 = 11,279.70/x
  3. Step 3: Cross multiply
    13,758.30x = 20,613.15 × 11,279.70
  4. Step 4: Simplify right side
    13,758.30x = 232,510,148.06
  5. Step 5: Solve for x
    x = 232,510,148.06/13,758.30
  6. Step 6: Final answer
    x = 16,899.63

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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.