Home / 21,531.69-29,713.55-12,100.23

Finding the Fourth Proportional to 21,531.69, 29,713.55 and 12,100.23

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Solution

The fourth proportional to 21,531.69, 29,713.55 and 12,100.23 is: 16,698.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,531.69 : 29,713.55 = 12,100.23 : x
  2. Step 2: Convert to fraction form
    21,531.69/29,713.55 = 12,100.23/x
  3. Step 3: Cross multiply
    21,531.69x = 29,713.55 × 12,100.23
  4. Step 4: Simplify right side
    21,531.69x = 359,540,728.62
  5. Step 5: Solve for x
    x = 359,540,728.62/21,531.69
  6. Step 6: Final answer
    x = 16,698.21

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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.