Home / 12,184.28-18,279.56-3,419.28

Finding the Fourth Proportional to 12,184.28, 18,279.56 and 3,419.28

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Solution

The fourth proportional to 12,184.28, 18,279.56 and 3,419.28 is: 5,129.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,184.28 : 18,279.56 = 3,419.28 : x
  2. Step 2: Convert to fraction form
    12,184.28/18,279.56 = 3,419.28/x
  3. Step 3: Cross multiply
    12,184.28x = 18,279.56 × 3,419.28
  4. Step 4: Simplify right side
    12,184.28x = 62,502,933.92
  5. Step 5: Solve for x
    x = 62,502,933.92/12,184.28
  6. Step 6: Final answer
    x = 5,129.80

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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.