Home / 26,643.80-39,990.24-13,505.36

Finding the Fourth Proportional to 26,643.80, 39,990.24 and 13,505.36

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Solution

The fourth proportional to 26,643.80, 39,990.24 and 13,505.36 is: 20,270.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,643.80 : 39,990.24 = 13,505.36 : x
  2. Step 2: Convert to fraction form
    26,643.80/39,990.24 = 13,505.36/x
  3. Step 3: Cross multiply
    26,643.80x = 39,990.24 × 13,505.36
  4. Step 4: Simplify right side
    26,643.80x = 540,082,587.69
  5. Step 5: Solve for x
    x = 540,082,587.69/26,643.80
  6. Step 6: Final answer
    x = 20,270.48

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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.