Home / 17,686.20-26,486.10-13,279.80

Finding the Fourth Proportional to 17,686.20, 26,486.10 and 13,279.80

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Solution

The fourth proportional to 17,686.20, 26,486.10 and 13,279.80 is: 19,887.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,686.20 : 26,486.10 = 13,279.80 : x
  2. Step 2: Convert to fraction form
    17,686.20/26,486.10 = 13,279.80/x
  3. Step 3: Cross multiply
    17,686.20x = 26,486.10 × 13,279.80
  4. Step 4: Simplify right side
    17,686.20x = 351,730,110.78
  5. Step 5: Solve for x
    x = 351,730,110.78/17,686.20
  6. Step 6: Final answer
    x = 19,887.26

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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.