Home / 21,512.43-29,682.27-12,554.64

Finding the Fourth Proportional to 21,512.43, 29,682.27 and 12,554.64

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Solution

The fourth proportional to 21,512.43, 29,682.27 and 12,554.64 is: 17,322.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,512.43 : 29,682.27 = 12,554.64 : x
  2. Step 2: Convert to fraction form
    21,512.43/29,682.27 = 12,554.64/x
  3. Step 3: Cross multiply
    21,512.43x = 29,682.27 × 12,554.64
  4. Step 4: Simplify right side
    21,512.43x = 372,650,214.23
  5. Step 5: Solve for x
    x = 372,650,214.23/21,512.43
  6. Step 6: Final answer
    x = 17,322.55

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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.