Home / 20,764.16-31,149.36-6,719.52

Finding the Fourth Proportional to 20,764.16, 31,149.36 and 6,719.52

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Solution

The fourth proportional to 20,764.16, 31,149.36 and 6,719.52 is: 10,080.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.16 : 31,149.36 = 6,719.52 : x
  2. Step 2: Convert to fraction form
    20,764.16/31,149.36 = 6,719.52/x
  3. Step 3: Cross multiply
    20,764.16x = 31,149.36 × 6,719.52
  4. Step 4: Simplify right side
    20,764.16x = 209,308,747.51
  5. Step 5: Solve for x
    x = 209,308,747.51/20,764.16
  6. Step 6: Final answer
    x = 10,080.29

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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.