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Finding the Fourth Proportional to 18,152.97, 27,213.05 and 12,608.93

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Solution

The fourth proportional to 18,152.97, 27,213.05 and 12,608.93 is: 18,901.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,152.97 : 27,213.05 = 12,608.93 : x
  2. Step 2: Convert to fraction form
    18,152.97/27,213.05 = 12,608.93/x
  3. Step 3: Cross multiply
    18,152.97x = 27,213.05 × 12,608.93
  4. Step 4: Simplify right side
    18,152.97x = 343,127,337.99
  5. Step 5: Solve for x
    x = 343,127,337.99/18,152.97
  6. Step 6: Final answer
    x = 18,901.99

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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.