Home / 20,960.13-31,440.26-13,152.54

Finding the Fourth Proportional to 20,960.13, 31,440.26 and 13,152.54

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Solution

The fourth proportional to 20,960.13, 31,440.26 and 13,152.54 is: 19,728.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.13 : 31,440.26 = 13,152.54 : x
  2. Step 2: Convert to fraction form
    20,960.13/31,440.26 = 13,152.54/x
  3. Step 3: Cross multiply
    20,960.13x = 31,440.26 × 13,152.54
  4. Step 4: Simplify right side
    20,960.13x = 413,519,274.05
  5. Step 5: Solve for x
    x = 413,519,274.05/20,960.13
  6. Step 6: Final answer
    x = 19,728.85

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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.