Home / 20,426.88-28,191.74-11,474.39

Finding the Fourth Proportional to 20,426.88, 28,191.74 and 11,474.39

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Solution

The fourth proportional to 20,426.88, 28,191.74 and 11,474.39 is: 15,836.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.88 : 28,191.74 = 11,474.39 : x
  2. Step 2: Convert to fraction form
    20,426.88/28,191.74 = 11,474.39/x
  3. Step 3: Cross multiply
    20,426.88x = 28,191.74 × 11,474.39
  4. Step 4: Simplify right side
    20,426.88x = 323,482,821.21
  5. Step 5: Solve for x
    x = 323,482,821.21/20,426.88
  6. Step 6: Final answer
    x = 15,836.13

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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.