Home / 26,218.40-39,294.78-20,649.75

Finding the Fourth Proportional to 26,218.40, 39,294.78 and 20,649.75

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Solution

The fourth proportional to 26,218.40, 39,294.78 and 20,649.75 is: 30,948.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,218.40 : 39,294.78 = 20,649.75 : x
  2. Step 2: Convert to fraction form
    26,218.40/39,294.78 = 20,649.75/x
  3. Step 3: Cross multiply
    26,218.40x = 39,294.78 × 20,649.75
  4. Step 4: Simplify right side
    26,218.40x = 811,427,383.31
  5. Step 5: Solve for x
    x = 811,427,383.31/26,218.40
  6. Step 6: Final answer
    x = 30,948.78

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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.