Home / 20,948.20-31,422.06-5,365.72

Finding the Fourth Proportional to 20,948.20, 31,422.06 and 5,365.72

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Solution

The fourth proportional to 20,948.20, 31,422.06 and 5,365.72 is: 8,048.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948.20 : 31,422.06 = 5,365.72 : x
  2. Step 2: Convert to fraction form
    20,948.20/31,422.06 = 5,365.72/x
  3. Step 3: Cross multiply
    20,948.20x = 31,422.06 × 5,365.72
  4. Step 4: Simplify right side
    20,948.20x = 168,601,975.78
  5. Step 5: Solve for x
    x = 168,601,975.78/20,948.20
  6. Step 6: Final answer
    x = 8,048.52

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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.