Home / 21,958.12-30,290.79-13,462.24

Finding the Fourth Proportional to 21,958.12, 30,290.79 and 13,462.24

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Solution

The fourth proportional to 21,958.12, 30,290.79 and 13,462.24 is: 18,570.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,958.12 : 30,290.79 = 13,462.24 : x
  2. Step 2: Convert to fraction form
    21,958.12/30,290.79 = 13,462.24/x
  3. Step 3: Cross multiply
    21,958.12x = 30,290.79 × 13,462.24
  4. Step 4: Simplify right side
    21,958.12x = 407,781,884.77
  5. Step 5: Solve for x
    x = 407,781,884.77/21,958.12
  6. Step 6: Final answer
    x = 18,570.89

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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.