Home / 20,849.28-31,270.60-6,809.18

Finding the Fourth Proportional to 20,849.28, 31,270.60 and 6,809.18

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Solution

The fourth proportional to 20,849.28, 31,270.60 and 6,809.18 is: 10,212.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849.28 : 31,270.60 = 6,809.18 : x
  2. Step 2: Convert to fraction form
    20,849.28/31,270.60 = 6,809.18/x
  3. Step 3: Cross multiply
    20,849.28x = 31,270.60 × 6,809.18
  4. Step 4: Simplify right side
    20,849.28x = 212,927,248.90
  5. Step 5: Solve for x
    x = 212,927,248.90/20,849.28
  6. Step 6: Final answer
    x = 10,212.69

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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.