Home / 20,760.63-31,151.88-9,082.05

Finding the Fourth Proportional to 20,760.63, 31,151.88 and 9,082.05

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Solution

The fourth proportional to 20,760.63, 31,151.88 and 9,082.05 is: 13,627.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.63 : 31,151.88 = 9,082.05 : x
  2. Step 2: Convert to fraction form
    20,760.63/31,151.88 = 9,082.05/x
  3. Step 3: Cross multiply
    20,760.63x = 31,151.88 × 9,082.05
  4. Step 4: Simplify right side
    20,760.63x = 282,922,931.75
  5. Step 5: Solve for x
    x = 282,922,931.75/20,760.63
  6. Step 6: Final answer
    x = 13,627.86

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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.