Home / 20,959.72-31,440.70-5,377.48

Finding the Fourth Proportional to 20,959.72, 31,440.70 and 5,377.48

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Solution

The fourth proportional to 20,959.72, 31,440.70 and 5,377.48 is: 8,066.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,959.72 : 31,440.70 = 5,377.48 : x
  2. Step 2: Convert to fraction form
    20,959.72/31,440.70 = 5,377.48/x
  3. Step 3: Cross multiply
    20,959.72x = 31,440.70 × 5,377.48
  4. Step 4: Simplify right side
    20,959.72x = 169,071,735.44
  5. Step 5: Solve for x
    x = 169,071,735.44/20,959.72
  6. Step 6: Final answer
    x = 8,066.51

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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.