Home / 20,862.82-31,294.25-5,280.44

Finding the Fourth Proportional to 20,862.82, 31,294.25 and 5,280.44

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Solution

The fourth proportional to 20,862.82, 31,294.25 and 5,280.44 is: 7,920.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,862.82 : 31,294.25 = 5,280.44 : x
  2. Step 2: Convert to fraction form
    20,862.82/31,294.25 = 5,280.44/x
  3. Step 3: Cross multiply
    20,862.82x = 31,294.25 × 5,280.44
  4. Step 4: Simplify right side
    20,862.82x = 165,247,383.07
  5. Step 5: Solve for x
    x = 165,247,383.07/20,862.82
  6. Step 6: Final answer
    x = 7,920.67

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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.