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Finding the Fourth Proportional to 26,871.20, 40,220.40 and 14,359.88

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Solution

The fourth proportional to 26,871.20, 40,220.40 and 14,359.88 is: 21,493.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,871.20 : 40,220.40 = 14,359.88 : x
  2. Step 2: Convert to fraction form
    26,871.20/40,220.40 = 14,359.88/x
  3. Step 3: Cross multiply
    26,871.20x = 40,220.40 × 14,359.88
  4. Step 4: Simplify right side
    26,871.20x = 577,560,117.55
  5. Step 5: Solve for x
    x = 577,560,117.55/26,871.20
  6. Step 6: Final answer
    x = 21,493.65

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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.