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Finding the Fourth Proportional to 26,375.80, 39,563.70 and 15,878.20

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Solution

The fourth proportional to 26,375.80, 39,563.70 and 15,878.20 is: 23,817.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,375.80 : 39,563.70 = 15,878.20 : x
  2. Step 2: Convert to fraction form
    26,375.80/39,563.70 = 15,878.20/x
  3. Step 3: Cross multiply
    26,375.80x = 39,563.70 × 15,878.20
  4. Step 4: Simplify right side
    26,375.80x = 628,200,341.34
  5. Step 5: Solve for x
    x = 628,200,341.34/26,375.80
  6. Step 6: Final answer
    x = 23,817.30

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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.