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Finding the Fourth Proportional to 26,706.76, 40,086.15 and 12,865.48

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Solution

The fourth proportional to 26,706.76, 40,086.15 and 12,865.48 is: 19,310.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,706.76 : 40,086.15 = 12,865.48 : x
  2. Step 2: Convert to fraction form
    26,706.76/40,086.15 = 12,865.48/x
  3. Step 3: Cross multiply
    26,706.76x = 40,086.15 × 12,865.48
  4. Step 4: Simplify right side
    26,706.76x = 515,727,561.10
  5. Step 5: Solve for x
    x = 515,727,561.10/26,706.76
  6. Step 6: Final answer
    x = 19,310.75

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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.