Home / 20,899.53-31,329.13-7,040.97

Finding the Fourth Proportional to 20,899.53, 31,329.13 and 7,040.97

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Solution

The fourth proportional to 20,899.53, 31,329.13 and 7,040.97 is: 10,554.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899.53 : 31,329.13 = 7,040.97 : x
  2. Step 2: Convert to fraction form
    20,899.53/31,329.13 = 7,040.97/x
  3. Step 3: Cross multiply
    20,899.53x = 31,329.13 × 7,040.97
  4. Step 4: Simplify right side
    20,899.53x = 220,587,464.46
  5. Step 5: Solve for x
    x = 220,587,464.46/20,899.53
  6. Step 6: Final answer
    x = 10,554.66

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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.