Home / 20,721.67-31,082.48-9,622.29

Finding the Fourth Proportional to 20,721.67, 31,082.48 and 9,622.29

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Solution

The fourth proportional to 20,721.67, 31,082.48 and 9,622.29 is: 14,433.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,721.67 : 31,082.48 = 9,622.29 : x
  2. Step 2: Convert to fraction form
    20,721.67/31,082.48 = 9,622.29/x
  3. Step 3: Cross multiply
    20,721.67x = 31,082.48 × 9,622.29
  4. Step 4: Simplify right side
    20,721.67x = 299,084,624.45
  5. Step 5: Solve for x
    x = 299,084,624.45/20,721.67
  6. Step 6: Final answer
    x = 14,433.42

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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.