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Finding the Fourth Proportional to 12,165.40, 18,248.10 and 8,010.10

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Solution

The fourth proportional to 12,165.40, 18,248.10 and 8,010.10 is: 12,015.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,165.40 : 18,248.10 = 8,010.10 : x
  2. Step 2: Convert to fraction form
    12,165.40/18,248.10 = 8,010.10/x
  3. Step 3: Cross multiply
    12,165.40x = 18,248.10 × 8,010.10
  4. Step 4: Simplify right side
    12,165.40x = 146,169,105.81
  5. Step 5: Solve for x
    x = 146,169,105.81/12,165.40
  6. Step 6: Final answer
    x = 12,015.15

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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.