Home / 21,191.46-29,241.12-13,648.02

Finding the Fourth Proportional to 21,191.46, 29,241.12 and 13,648.02

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Solution

The fourth proportional to 21,191.46, 29,241.12 and 13,648.02 is: 18,832.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.46 : 29,241.12 = 13,648.02 : x
  2. Step 2: Convert to fraction form
    21,191.46/29,241.12 = 13,648.02/x
  3. Step 3: Cross multiply
    21,191.46x = 29,241.12 × 13,648.02
  4. Step 4: Simplify right side
    21,191.46x = 399,083,390.58
  5. Step 5: Solve for x
    x = 399,083,390.58/21,191.46
  6. Step 6: Final answer
    x = 18,832.27

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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.