Home / 21,824.60-30,116.60-12,872.48

Finding the Fourth Proportional to 21,824.60, 30,116.60 and 12,872.48

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Solution

The fourth proportional to 21,824.60, 30,116.60 and 12,872.48 is: 17,763.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,824.60 : 30,116.60 = 12,872.48 : x
  2. Step 2: Convert to fraction form
    21,824.60/30,116.60 = 12,872.48/x
  3. Step 3: Cross multiply
    21,824.60x = 30,116.60 × 12,872.48
  4. Step 4: Simplify right side
    21,824.60x = 387,675,331.17
  5. Step 5: Solve for x
    x = 387,675,331.17/21,824.60
  6. Step 6: Final answer
    x = 17,763.23

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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.