Home / 12,187.04-18,279.14-3,422.70

Finding the Fourth Proportional to 12,187.04, 18,279.14 and 3,422.70

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Solution

The fourth proportional to 12,187.04, 18,279.14 and 3,422.70 is: 5,133.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187.04 : 18,279.14 = 3,422.70 : x
  2. Step 2: Convert to fraction form
    12,187.04/18,279.14 = 3,422.70/x
  3. Step 3: Cross multiply
    12,187.04x = 18,279.14 × 3,422.70
  4. Step 4: Simplify right side
    12,187.04x = 62,563,995.36
  5. Step 5: Solve for x
    x = 62,563,995.36/12,187.04
  6. Step 6: Final answer
    x = 5,133.65

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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.