Home / 20,810.67-31,215.97-5,228.29

Finding the Fourth Proportional to 20,810.67, 31,215.97 and 5,228.29

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Solution

The fourth proportional to 20,810.67, 31,215.97 and 5,228.29 is: 7,842.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,810.67 : 31,215.97 = 5,228.29 : x
  2. Step 2: Convert to fraction form
    20,810.67/31,215.97 = 5,228.29/x
  3. Step 3: Cross multiply
    20,810.67x = 31,215.97 × 5,228.29
  4. Step 4: Simplify right side
    20,810.67x = 163,206,143.79
  5. Step 5: Solve for x
    x = 163,206,143.79/20,810.67
  6. Step 6: Final answer
    x = 7,842.43

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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.