Home / 21,486.42-29,655.05-13,531.14

Finding the Fourth Proportional to 21,486.42, 29,655.05 and 13,531.14

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Solution

The fourth proportional to 21,486.42, 29,655.05 and 13,531.14 is: 18,675.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,486.42 : 29,655.05 = 13,531.14 : x
  2. Step 2: Convert to fraction form
    21,486.42/29,655.05 = 13,531.14/x
  3. Step 3: Cross multiply
    21,486.42x = 29,655.05 × 13,531.14
  4. Step 4: Simplify right side
    21,486.42x = 401,266,565.60
  5. Step 5: Solve for x
    x = 401,266,565.60/21,486.42
  6. Step 6: Final answer
    x = 18,675.36

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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.