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Finding the Fourth Proportional to 26,599.78, 39,905.88 and 9,069.76

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Solution

The fourth proportional to 26,599.78, 39,905.88 and 9,069.76 is: 13,606.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,599.78 : 39,905.88 = 9,069.76 : x
  2. Step 2: Convert to fraction form
    26,599.78/39,905.88 = 9,069.76/x
  3. Step 3: Cross multiply
    26,599.78x = 39,905.88 × 9,069.76
  4. Step 4: Simplify right side
    26,599.78x = 361,936,754.19
  5. Step 5: Solve for x
    x = 361,936,754.19/26,599.78
  6. Step 6: Final answer
    x = 13,606.76

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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.