Home / 20,911.96-31,367.76-5,117.04

Finding the Fourth Proportional to 20,911.96, 31,367.76 and 5,117.04

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Solution

The fourth proportional to 20,911.96, 31,367.76 and 5,117.04 is: 7,675.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,911.96 : 31,367.76 = 5,117.04 : x
  2. Step 2: Convert to fraction form
    20,911.96/31,367.76 = 5,117.04/x
  3. Step 3: Cross multiply
    20,911.96x = 31,367.76 × 5,117.04
  4. Step 4: Simplify right side
    20,911.96x = 160,510,082.63
  5. Step 5: Solve for x
    x = 160,510,082.63/20,911.96
  6. Step 6: Final answer
    x = 7,675.52

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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.