Home / 20,679.88-31,015.70-5,888.92

Finding the Fourth Proportional to 20,679.88, 31,015.70 and 5,888.92

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Solution

The fourth proportional to 20,679.88, 31,015.70 and 5,888.92 is: 8,832.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.88 : 31,015.70 = 5,888.92 : x
  2. Step 2: Convert to fraction form
    20,679.88/31,015.70 = 5,888.92/x
  3. Step 3: Cross multiply
    20,679.88x = 31,015.70 × 5,888.92
  4. Step 4: Simplify right side
    20,679.88x = 182,648,976.04
  5. Step 5: Solve for x
    x = 182,648,976.04/20,679.88
  6. Step 6: Final answer
    x = 8,832.21

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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.