Home / 20,882.18-31,308.39-9,782.82

Finding the Fourth Proportional to 20,882.18, 31,308.39 and 9,782.82

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Solution

The fourth proportional to 20,882.18, 31,308.39 and 9,782.82 is: 14,667.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882.18 : 31,308.39 = 9,782.82 : x
  2. Step 2: Convert to fraction form
    20,882.18/31,308.39 = 9,782.82/x
  3. Step 3: Cross multiply
    20,882.18x = 31,308.39 × 9,782.82
  4. Step 4: Simplify right side
    20,882.18x = 306,284,343.86
  5. Step 5: Solve for x
    x = 306,284,343.86/20,882.18
  6. Step 6: Final answer
    x = 14,667.26

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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.