Home / 21,839.12-30,141.23-13,346.14

Finding the Fourth Proportional to 21,839.12, 30,141.23 and 13,346.14

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Solution

The fourth proportional to 21,839.12, 30,141.23 and 13,346.14 is: 18,419.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,839.12 : 30,141.23 = 13,346.14 : x
  2. Step 2: Convert to fraction form
    21,839.12/30,141.23 = 13,346.14/x
  3. Step 3: Cross multiply
    21,839.12x = 30,141.23 × 13,346.14
  4. Step 4: Simplify right side
    21,839.12x = 402,268,933.27
  5. Step 5: Solve for x
    x = 402,268,933.27/21,839.12
  6. Step 6: Final answer
    x = 18,419.65

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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.