Home / 20,851.88-31,277.18-7,698.92

Finding the Fourth Proportional to 20,851.88, 31,277.18 and 7,698.92

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Solution

The fourth proportional to 20,851.88, 31,277.18 and 7,698.92 is: 11,548.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,851.88 : 31,277.18 = 7,698.92 : x
  2. Step 2: Convert to fraction form
    20,851.88/31,277.18 = 7,698.92/x
  3. Step 3: Cross multiply
    20,851.88x = 31,277.18 × 7,698.92
  4. Step 4: Simplify right side
    20,851.88x = 240,800,506.65
  5. Step 5: Solve for x
    x = 240,800,506.65/20,851.88
  6. Step 6: Final answer
    x = 11,548.14

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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.