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Finding the Fourth Proportional to 27,087.20, 40,614.60 and 13,965.20

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Solution

The fourth proportional to 27,087.20, 40,614.60 and 13,965.20 is: 20,939.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,087.20 : 40,614.60 = 13,965.20 : x
  2. Step 2: Convert to fraction form
    27,087.20/40,614.60 = 13,965.20/x
  3. Step 3: Cross multiply
    27,087.20x = 40,614.60 × 13,965.20
  4. Step 4: Simplify right side
    27,087.20x = 567,191,011.92
  5. Step 5: Solve for x
    x = 567,191,011.92/27,087.20
  6. Step 6: Final answer
    x = 20,939.45

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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.