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Finding the Fourth Proportional to 26,515.59, 39,788.88 and 9,887.10

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Solution

The fourth proportional to 26,515.59, 39,788.88 and 9,887.10 is: 14,836.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,515.59 : 39,788.88 = 9,887.10 : x
  2. Step 2: Convert to fraction form
    26,515.59/39,788.88 = 9,887.10/x
  3. Step 3: Cross multiply
    26,515.59x = 39,788.88 × 9,887.10
  4. Step 4: Simplify right side
    26,515.59x = 393,396,635.45
  5. Step 5: Solve for x
    x = 393,396,635.45/26,515.59
  6. Step 6: Final answer
    x = 14,836.43

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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.