Home / 20,996.39-28,965.66-14,188.23

Finding the Fourth Proportional to 20,996.39, 28,965.66 and 14,188.23

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Solution

The fourth proportional to 20,996.39, 28,965.66 and 14,188.23 is: 19,573.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,996.39 : 28,965.66 = 14,188.23 : x
  2. Step 2: Convert to fraction form
    20,996.39/28,965.66 = 14,188.23/x
  3. Step 3: Cross multiply
    20,996.39x = 28,965.66 × 14,188.23
  4. Step 4: Simplify right side
    20,996.39x = 410,971,446.18
  5. Step 5: Solve for x
    x = 410,971,446.18/20,996.39
  6. Step 6: Final answer
    x = 19,573.43

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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.