Home / 21,926.39-30,258-13,427.15

Finding the Fourth Proportional to 21,926.39, 30,258 and 13,427.15

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Solution

The fourth proportional to 21,926.39, 30,258 and 13,427.15 is: 18,529.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,926.39 : 30,258 = 13,427.15 : x
  2. Step 2: Convert to fraction form
    21,926.39/30,258 = 13,427.15/x
  3. Step 3: Cross multiply
    21,926.39x = 30,258 × 13,427.15
  4. Step 4: Simplify right side
    21,926.39x = 406,278,553.41
  5. Step 5: Solve for x
    x = 406,278,553.41/21,926.39
  6. Step 6: Final answer
    x = 18,529.21

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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.