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Finding the Fourth Proportional to 26,991.92, 40,487.88 and 13,835.90

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Solution

The fourth proportional to 26,991.92, 40,487.88 and 13,835.90 is: 20,753.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,991.92 : 40,487.88 = 13,835.90 : x
  2. Step 2: Convert to fraction form
    26,991.92/40,487.88 = 13,835.90/x
  3. Step 3: Cross multiply
    26,991.92x = 40,487.88 × 13,835.90
  4. Step 4: Simplify right side
    26,991.92x = 560,186,056.45
  5. Step 5: Solve for x
    x = 560,186,056.45/26,991.92
  6. Step 6: Final answer
    x = 20,753.85

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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.