Home / 12,081.40-18,122.10-9,602.80

Finding the Fourth Proportional to 12,081.40, 18,122.10 and 9,602.80

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Solution

The fourth proportional to 12,081.40, 18,122.10 and 9,602.80 is: 14,404.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,081.40 : 18,122.10 = 9,602.80 : x
  2. Step 2: Convert to fraction form
    12,081.40/18,122.10 = 9,602.80/x
  3. Step 3: Cross multiply
    12,081.40x = 18,122.10 × 9,602.80
  4. Step 4: Simplify right side
    12,081.40x = 174,022,901.88
  5. Step 5: Solve for x
    x = 174,022,901.88/12,081.40
  6. Step 6: Final answer
    x = 14,404.20

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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.