Home / 27,279.18-40,889.37-13,209.42

Finding the Fourth Proportional to 27,279.18, 40,889.37 and 13,209.42

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Solution

The fourth proportional to 27,279.18, 40,889.37 and 13,209.42 is: 19,799.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,279.18 : 40,889.37 = 13,209.42 : x
  2. Step 2: Convert to fraction form
    27,279.18/40,889.37 = 13,209.42/x
  3. Step 3: Cross multiply
    27,279.18x = 40,889.37 × 13,209.42
  4. Step 4: Simplify right side
    27,279.18x = 540,124,861.87
  5. Step 5: Solve for x
    x = 540,124,861.87/27,279.18
  6. Step 6: Final answer
    x = 19,799.89

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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.