Home / 12,260.20-18,390.30-11,531.20

Finding the Fourth Proportional to 12,260.20, 18,390.30 and 11,531.20

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Solution

The fourth proportional to 12,260.20, 18,390.30 and 11,531.20 is: 17,296.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,260.20 : 18,390.30 = 11,531.20 : x
  2. Step 2: Convert to fraction form
    12,260.20/18,390.30 = 11,531.20/x
  3. Step 3: Cross multiply
    12,260.20x = 18,390.30 × 11,531.20
  4. Step 4: Simplify right side
    12,260.20x = 212,062,227.36
  5. Step 5: Solve for x
    x = 212,062,227.36/12,260.20
  6. Step 6: Final answer
    x = 17,296.80

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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.