Home / 20,839.09-31,261.38-7,700.71

Finding the Fourth Proportional to 20,839.09, 31,261.38 and 7,700.71

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Solution

The fourth proportional to 20,839.09, 31,261.38 and 7,700.71 is: 11,552.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839.09 : 31,261.38 = 7,700.71 : x
  2. Step 2: Convert to fraction form
    20,839.09/31,261.38 = 7,700.71/x
  3. Step 3: Cross multiply
    20,839.09x = 31,261.38 × 7,700.71
  4. Step 4: Simplify right side
    20,839.09x = 240,734,821.58
  5. Step 5: Solve for x
    x = 240,734,821.58/20,839.09
  6. Step 6: Final answer
    x = 11,552.08

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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.