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Finding the Fourth Proportional to 18,007.30, 27,010.95 and 8,165.80

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Solution

The fourth proportional to 18,007.30, 27,010.95 and 8,165.80 is: 12,248.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,007.30 : 27,010.95 = 8,165.80 : x
  2. Step 2: Convert to fraction form
    18,007.30/27,010.95 = 8,165.80/x
  3. Step 3: Cross multiply
    18,007.30x = 27,010.95 × 8,165.80
  4. Step 4: Simplify right side
    18,007.30x = 220,566,015.51
  5. Step 5: Solve for x
    x = 220,566,015.51/18,007.30
  6. Step 6: Final answer
    x = 12,248.70

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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.