Home / 19,339.68-26,679.24-12,178.20

Finding the Fourth Proportional to 19,339.68, 26,679.24 and 12,178.20

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Solution

The fourth proportional to 19,339.68, 26,679.24 and 12,178.20 is: 16,799.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,339.68 : 26,679.24 = 12,178.20 : x
  2. Step 2: Convert to fraction form
    19,339.68/26,679.24 = 12,178.20/x
  3. Step 3: Cross multiply
    19,339.68x = 26,679.24 × 12,178.20
  4. Step 4: Simplify right side
    19,339.68x = 324,905,120.57
  5. Step 5: Solve for x
    x = 324,905,120.57/19,339.68
  6. Step 6: Final answer
    x = 16,799.92

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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.