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Finding the Fourth Proportional to 12,005.10, 18,007.65 and 9,927.45

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Solution

The fourth proportional to 12,005.10, 18,007.65 and 9,927.45 is: 14,891.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,005.10 : 18,007.65 = 9,927.45 : x
  2. Step 2: Convert to fraction form
    12,005.10/18,007.65 = 9,927.45/x
  3. Step 3: Cross multiply
    12,005.10x = 18,007.65 × 9,927.45
  4. Step 4: Simplify right side
    12,005.10x = 178,770,044.99
  5. Step 5: Solve for x
    x = 178,770,044.99/12,005.10
  6. Step 6: Final answer
    x = 14,891.18

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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.