Home / 20,926.49-28,867.89-13,364.87

Finding the Fourth Proportional to 20,926.49, 28,867.89 and 13,364.87

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Solution

The fourth proportional to 20,926.49, 28,867.89 and 13,364.87 is: 18,436.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.49 : 28,867.89 = 13,364.87 : x
  2. Step 2: Convert to fraction form
    20,926.49/28,867.89 = 13,364.87/x
  3. Step 3: Cross multiply
    20,926.49x = 28,867.89 × 13,364.87
  4. Step 4: Simplify right side
    20,926.49x = 385,815,597.02
  5. Step 5: Solve for x
    x = 385,815,597.02/20,926.49
  6. Step 6: Final answer
    x = 18,436.71

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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.