Home / 26,559.28-39,863.54-13,420.90

Finding the Fourth Proportional to 26,559.28, 39,863.54 and 13,420.90

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Solution

The fourth proportional to 26,559.28, 39,863.54 and 13,420.90 is: 20,143.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,559.28 : 39,863.54 = 13,420.90 : x
  2. Step 2: Convert to fraction form
    26,559.28/39,863.54 = 13,420.90/x
  3. Step 3: Cross multiply
    26,559.28x = 39,863.54 × 13,420.90
  4. Step 4: Simplify right side
    26,559.28x = 535,004,583.99
  5. Step 5: Solve for x
    x = 535,004,583.99/26,559.28
  6. Step 6: Final answer
    x = 20,143.79

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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.