Home / 12,339.40-18,498.30-11,027.20

Finding the Fourth Proportional to 12,339.40, 18,498.30 and 11,027.20

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Solution

The fourth proportional to 12,339.40, 18,498.30 and 11,027.20 is: 16,531.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,339.40 : 18,498.30 = 11,027.20 : x
  2. Step 2: Convert to fraction form
    12,339.40/18,498.30 = 11,027.20/x
  3. Step 3: Cross multiply
    12,339.40x = 18,498.30 × 11,027.20
  4. Step 4: Simplify right side
    12,339.40x = 203,984,453.76
  5. Step 5: Solve for x
    x = 203,984,453.76/12,339.40
  6. Step 6: Final answer
    x = 16,531.15

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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.