Home / 21,729.92-29,968.80-14,647.04

Finding the Fourth Proportional to 21,729.92, 29,968.80 and 14,647.04

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Solution

The fourth proportional to 21,729.92, 29,968.80 and 14,647.04 is: 20,200.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,729.92 : 29,968.80 = 14,647.04 : x
  2. Step 2: Convert to fraction form
    21,729.92/29,968.80 = 14,647.04/x
  3. Step 3: Cross multiply
    21,729.92x = 29,968.80 × 14,647.04
  4. Step 4: Simplify right side
    21,729.92x = 438,954,212.35
  5. Step 5: Solve for x
    x = 438,954,212.35/21,729.92
  6. Step 6: Final answer
    x = 20,200.45

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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.