Home / 26,654.90-39,978.23-9,120.69

Finding the Fourth Proportional to 26,654.90, 39,978.23 and 9,120.69

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Solution

The fourth proportional to 26,654.90, 39,978.23 and 9,120.69 is: 13,679.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,654.90 : 39,978.23 = 9,120.69 : x
  2. Step 2: Convert to fraction form
    26,654.90/39,978.23 = 9,120.69/x
  3. Step 3: Cross multiply
    26,654.90x = 39,978.23 × 9,120.69
  4. Step 4: Simplify right side
    26,654.90x = 364,628,996.98
  5. Step 5: Solve for x
    x = 364,628,996.98/26,654.90
  6. Step 6: Final answer
    x = 13,679.63

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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.