Home / 20,498.13-30,758.13-8,810.64

Finding the Fourth Proportional to 20,498.13, 30,758.13 and 8,810.64

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Solution

The fourth proportional to 20,498.13, 30,758.13 and 8,810.64 is: 13,220.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,498.13 : 30,758.13 = 8,810.64 : x
  2. Step 2: Convert to fraction form
    20,498.13/30,758.13 = 8,810.64/x
  3. Step 3: Cross multiply
    20,498.13x = 30,758.13 × 8,810.64
  4. Step 4: Simplify right side
    20,498.13x = 270,998,810.50
  5. Step 5: Solve for x
    x = 270,998,810.50/20,498.13
  6. Step 6: Final answer
    x = 13,220.66

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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.