Home / 21,486.40-29,645.15-13,933.04

Finding the Fourth Proportional to 21,486.40, 29,645.15 and 13,933.04

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Solution

The fourth proportional to 21,486.40, 29,645.15 and 13,933.04 is: 19,223.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,486.40 : 29,645.15 = 13,933.04 : x
  2. Step 2: Convert to fraction form
    21,486.40/29,645.15 = 13,933.04/x
  3. Step 3: Cross multiply
    21,486.40x = 29,645.15 × 13,933.04
  4. Step 4: Simplify right side
    21,486.40x = 413,046,842.87
  5. Step 5: Solve for x
    x = 413,046,842.87/21,486.40
  6. Step 6: Final answer
    x = 19,223.64

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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.