Home / 20,717.52-31,078.98-7,576.08

Finding the Fourth Proportional to 20,717.52, 31,078.98 and 7,576.08

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Solution

The fourth proportional to 20,717.52, 31,078.98 and 7,576.08 is: 11,365.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.52 : 31,078.98 = 7,576.08 : x
  2. Step 2: Convert to fraction form
    20,717.52/31,078.98 = 7,576.08/x
  3. Step 3: Cross multiply
    20,717.52x = 31,078.98 × 7,576.08
  4. Step 4: Simplify right side
    20,717.52x = 235,456,838.80
  5. Step 5: Solve for x
    x = 235,456,838.80/20,717.52
  6. Step 6: Final answer
    x = 11,365.11

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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.