Home / 20,882.30-31,320.14-6,842.30

Finding the Fourth Proportional to 20,882.30, 31,320.14 and 6,842.30

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Solution

The fourth proportional to 20,882.30, 31,320.14 and 6,842.30 is: 10,262.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882.30 : 31,320.14 = 6,842.30 : x
  2. Step 2: Convert to fraction form
    20,882.30/31,320.14 = 6,842.30/x
  3. Step 3: Cross multiply
    20,882.30x = 31,320.14 × 6,842.30
  4. Step 4: Simplify right side
    20,882.30x = 214,301,603.11
  5. Step 5: Solve for x
    x = 214,301,603.11/20,882.30
  6. Step 6: Final answer
    x = 10,262.36

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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.