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Finding the Fourth Proportional to 26,869.60, 40,342.80 and 15,205.60

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Solution

The fourth proportional to 26,869.60, 40,342.80 and 15,205.60 is: 22,830.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,869.60 : 40,342.80 = 15,205.60 : x
  2. Step 2: Convert to fraction form
    26,869.60/40,342.80 = 15,205.60/x
  3. Step 3: Cross multiply
    26,869.60x = 40,342.80 × 15,205.60
  4. Step 4: Simplify right side
    26,869.60x = 613,436,479.68
  5. Step 5: Solve for x
    x = 613,436,479.68/26,869.60
  6. Step 6: Final answer
    x = 22,830.13

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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.