Home / 12,279.33-18,419.13-9,199.44

Finding the Fourth Proportional to 12,279.33, 18,419.13 and 9,199.44

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Solution

The fourth proportional to 12,279.33, 18,419.13 and 9,199.44 is: 13,799.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,279.33 : 18,419.13 = 9,199.44 : x
  2. Step 2: Convert to fraction form
    12,279.33/18,419.13 = 9,199.44/x
  3. Step 3: Cross multiply
    12,279.33x = 18,419.13 × 9,199.44
  4. Step 4: Simplify right side
    12,279.33x = 169,445,681.29
  5. Step 5: Solve for x
    x = 169,445,681.29/12,279.33
  6. Step 6: Final answer
    x = 13,799.26

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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.