Home / 20,729.54-31,089.74-8,247.24

Finding the Fourth Proportional to 20,729.54, 31,089.74 and 8,247.24

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Solution

The fourth proportional to 20,729.54, 31,089.74 and 8,247.24 is: 12,369.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.54 : 31,089.74 = 8,247.24 : x
  2. Step 2: Convert to fraction form
    20,729.54/31,089.74 = 8,247.24/x
  3. Step 3: Cross multiply
    20,729.54x = 31,089.74 × 8,247.24
  4. Step 4: Simplify right side
    20,729.54x = 256,404,506.08
  5. Step 5: Solve for x
    x = 256,404,506.08/20,729.54
  6. Step 6: Final answer
    x = 12,369.04

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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.