Home / 21,770.71-30,103.88-17,286.55

Finding the Fourth Proportional to 21,770.71, 30,103.88 and 17,286.55

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Solution

The fourth proportional to 21,770.71, 30,103.88 and 17,286.55 is: 23,903.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,770.71 : 30,103.88 = 17,286.55 : x
  2. Step 2: Convert to fraction form
    21,770.71/30,103.88 = 17,286.55/x
  3. Step 3: Cross multiply
    21,770.71x = 30,103.88 × 17,286.55
  4. Step 4: Simplify right side
    21,770.71x = 520,392,226.81
  5. Step 5: Solve for x
    x = 520,392,226.81/21,770.71
  6. Step 6: Final answer
    x = 23,903.32

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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.