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Finding the Fourth Proportional to 12,070.67, 18,081.10 and 8,954.20

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Solution

The fourth proportional to 12,070.67, 18,081.10 and 8,954.20 is: 13,412.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,070.67 : 18,081.10 = 8,954.20 : x
  2. Step 2: Convert to fraction form
    12,070.67/18,081.10 = 8,954.20/x
  3. Step 3: Cross multiply
    12,070.67x = 18,081.10 × 8,954.20
  4. Step 4: Simplify right side
    12,070.67x = 161,901,718.03
  5. Step 5: Solve for x
    x = 161,901,718.03/12,070.67
  6. Step 6: Final answer
    x = 13,412.82

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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.