Home / 20,498.80-30,748.26-5,707.75

Finding the Fourth Proportional to 20,498.80, 30,748.26 and 5,707.75

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Solution

The fourth proportional to 20,498.80, 30,748.26 and 5,707.75 is: 8,561.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,498.80 : 30,748.26 = 5,707.75 : x
  2. Step 2: Convert to fraction form
    20,498.80/30,748.26 = 5,707.75/x
  3. Step 3: Cross multiply
    20,498.80x = 30,748.26 × 5,707.75
  4. Step 4: Simplify right side
    20,498.80x = 175,503,381.02
  5. Step 5: Solve for x
    x = 175,503,381.02/20,498.80
  6. Step 6: Final answer
    x = 8,561.64

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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.