Home / 21,571.63-29,759.24-12,615.18

Finding the Fourth Proportional to 21,571.63, 29,759.24 and 12,615.18

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Solution

The fourth proportional to 21,571.63, 29,759.24 and 12,615.18 is: 17,403.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,571.63 : 29,759.24 = 12,615.18 : x
  2. Step 2: Convert to fraction form
    21,571.63/29,759.24 = 12,615.18/x
  3. Step 3: Cross multiply
    21,571.63x = 29,759.24 × 12,615.18
  4. Step 4: Simplify right side
    21,571.63x = 375,418,169.26
  5. Step 5: Solve for x
    x = 375,418,169.26/21,571.63
  6. Step 6: Final answer
    x = 17,403.33

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Double scale
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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.