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Finding the Fourth Proportional to 18,007.68, 27,001.39 and 12,391.95

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Solution

The fourth proportional to 18,007.68, 27,001.39 and 12,391.95 is: 18,580.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,007.68 : 27,001.39 = 12,391.95 : x
  2. Step 2: Convert to fraction form
    18,007.68/27,001.39 = 12,391.95/x
  3. Step 3: Cross multiply
    18,007.68x = 27,001.39 × 12,391.95
  4. Step 4: Simplify right side
    18,007.68x = 334,599,874.81
  5. Step 5: Solve for x
    x = 334,599,874.81/18,007.68
  6. Step 6: Final answer
    x = 18,580.95

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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.