Home / 20,679.97-31,010.40-6,637.41

Finding the Fourth Proportional to 20,679.97, 31,010.40 and 6,637.41

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Solution

The fourth proportional to 20,679.97, 31,010.40 and 6,637.41 is: 9,953.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.97 : 31,010.40 = 6,637.41 : x
  2. Step 2: Convert to fraction form
    20,679.97/31,010.40 = 6,637.41/x
  3. Step 3: Cross multiply
    20,679.97x = 31,010.40 × 6,637.41
  4. Step 4: Simplify right side
    20,679.97x = 205,828,705.88
  5. Step 5: Solve for x
    x = 205,828,705.88/20,679.97
  6. Step 6: Final answer
    x = 9,953.05

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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.