Home / 20,796.13-28,701.90-13,245.70

Finding the Fourth Proportional to 20,796.13, 28,701.90 and 13,245.70

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Solution

The fourth proportional to 20,796.13, 28,701.90 and 13,245.70 is: 18,281.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,796.13 : 28,701.90 = 13,245.70 : x
  2. Step 2: Convert to fraction form
    20,796.13/28,701.90 = 13,245.70/x
  3. Step 3: Cross multiply
    20,796.13x = 28,701.90 × 13,245.70
  4. Step 4: Simplify right side
    20,796.13x = 380,176,756.83
  5. Step 5: Solve for x
    x = 380,176,756.83/20,796.13
  6. Step 6: Final answer
    x = 18,281.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.