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Finding the Fourth Proportional to 27,039.70, 40,523.10 and 18,129.70

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Solution

The fourth proportional to 27,039.70, 40,523.10 and 18,129.70 is: 27,170.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,039.70 : 40,523.10 = 18,129.70 : x
  2. Step 2: Convert to fraction form
    27,039.70/40,523.10 = 18,129.70/x
  3. Step 3: Cross multiply
    27,039.70x = 40,523.10 × 18,129.70
  4. Step 4: Simplify right side
    27,039.70x = 734,671,646.07
  5. Step 5: Solve for x
    x = 734,671,646.07/27,039.70
  6. Step 6: Final answer
    x = 27,170.11

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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.