Home / 26,419.40-39,617.57-9,991.88

Finding the Fourth Proportional to 26,419.40, 39,617.57 and 9,991.88

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Solution

The fourth proportional to 26,419.40, 39,617.57 and 9,991.88 is: 14,983.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,419.40 : 39,617.57 = 9,991.88 : x
  2. Step 2: Convert to fraction form
    26,419.40/39,617.57 = 9,991.88/x
  3. Step 3: Cross multiply
    26,419.40x = 39,617.57 × 9,991.88
  4. Step 4: Simplify right side
    26,419.40x = 395,853,832.22
  5. Step 5: Solve for x
    x = 395,853,832.22/26,419.40
  6. Step 6: Final answer
    x = 14,983.46

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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.