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Finding the Fourth Proportional to 12,036.80, 18,055.20 and 10,943.30

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Solution

The fourth proportional to 12,036.80, 18,055.20 and 10,943.30 is: 16,414.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,036.80 : 18,055.20 = 10,943.30 : x
  2. Step 2: Convert to fraction form
    12,036.80/18,055.20 = 10,943.30/x
  3. Step 3: Cross multiply
    12,036.80x = 18,055.20 × 10,943.30
  4. Step 4: Simplify right side
    12,036.80x = 197,583,470.16
  5. Step 5: Solve for x
    x = 197,583,470.16/12,036.80
  6. Step 6: Final answer
    x = 16,414.95

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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.