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Finding the Fourth Proportional to 18,009.76, 27,017.36 and 8,148.84

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Solution

The fourth proportional to 18,009.76, 27,017.36 and 8,148.84 is: 12,224.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,009.76 : 27,017.36 = 8,148.84 : x
  2. Step 2: Convert to fraction form
    18,009.76/27,017.36 = 8,148.84/x
  3. Step 3: Cross multiply
    18,009.76x = 27,017.36 × 8,148.84
  4. Step 4: Simplify right side
    18,009.76x = 220,160,143.86
  5. Step 5: Solve for x
    x = 220,160,143.86/18,009.76
  6. Step 6: Final answer
    x = 12,224.49

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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.