Home / 20,805.19-31,206.56-6,013.78

Finding the Fourth Proportional to 20,805.19, 31,206.56 and 6,013.78

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Solution

The fourth proportional to 20,805.19, 31,206.56 and 6,013.78 is: 9,020.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,805.19 : 31,206.56 = 6,013.78 : x
  2. Step 2: Convert to fraction form
    20,805.19/31,206.56 = 6,013.78/x
  3. Step 3: Cross multiply
    20,805.19x = 31,206.56 × 6,013.78
  4. Step 4: Simplify right side
    20,805.19x = 187,669,200.30
  5. Step 5: Solve for x
    x = 187,669,200.30/20,805.19
  6. Step 6: Final answer
    x = 9,020.31

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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.