Home / 20,680.34-31,023.37-6,637.07

Finding the Fourth Proportional to 20,680.34, 31,023.37 and 6,637.07

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Solution

The fourth proportional to 20,680.34, 31,023.37 and 6,637.07 is: 9,956.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680.34 : 31,023.37 = 6,637.07 : x
  2. Step 2: Convert to fraction form
    20,680.34/31,023.37 = 6,637.07/x
  3. Step 3: Cross multiply
    20,680.34x = 31,023.37 × 6,637.07
  4. Step 4: Simplify right side
    20,680.34x = 205,904,278.33
  5. Step 5: Solve for x
    x = 205,904,278.33/20,680.34
  6. Step 6: Final answer
    x = 9,956.52

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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.