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Finding the Fourth Proportional to 26,878.60, 40,221.90 and 17,022.60

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Solution

The fourth proportional to 26,878.60, 40,221.90 and 17,022.60 is: 25,473.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,878.60 : 40,221.90 = 17,022.60 : x
  2. Step 2: Convert to fraction form
    26,878.60/40,221.90 = 17,022.60/x
  3. Step 3: Cross multiply
    26,878.60x = 40,221.90 × 17,022.60
  4. Step 4: Simplify right side
    26,878.60x = 684,681,314.94
  5. Step 5: Solve for x
    x = 684,681,314.94/26,878.60
  6. Step 6: Final answer
    x = 25,473.10

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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.