Home / 20,451.74-28,206.50-14,422.05

Finding the Fourth Proportional to 20,451.74, 28,206.50 and 14,422.05

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Solution

The fourth proportional to 20,451.74, 28,206.50 and 14,422.05 is: 19,890.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,451.74 : 28,206.50 = 14,422.05 : x
  2. Step 2: Convert to fraction form
    20,451.74/28,206.50 = 14,422.05/x
  3. Step 3: Cross multiply
    20,451.74x = 28,206.50 × 14,422.05
  4. Step 4: Simplify right side
    20,451.74x = 406,795,481.21
  5. Step 5: Solve for x
    x = 406,795,481.21/20,451.74
  6. Step 6: Final answer
    x = 19,890.51

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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.