Home / 20,726.80-31,089.64-5,144.24

Finding the Fourth Proportional to 20,726.80, 31,089.64 and 5,144.24

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Solution

The fourth proportional to 20,726.80, 31,089.64 and 5,144.24 is: 7,716.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,726.80 : 31,089.64 = 5,144.24 : x
  2. Step 2: Convert to fraction form
    20,726.80/31,089.64 = 5,144.24/x
  3. Step 3: Cross multiply
    20,726.80x = 31,089.64 × 5,144.24
  4. Step 4: Simplify right side
    20,726.80x = 159,932,569.67
  5. Step 5: Solve for x
    x = 159,932,569.67/20,726.80
  6. Step 6: Final answer
    x = 7,716.22

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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.