Home / 21,759.44-30,029-12,200.40

Finding the Fourth Proportional to 21,759.44, 30,029 and 12,200.40

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Solution

The fourth proportional to 21,759.44, 30,029 and 12,200.40 is: 16,837.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,759.44 : 30,029 = 12,200.40 : x
  2. Step 2: Convert to fraction form
    21,759.44/30,029 = 12,200.40/x
  3. Step 3: Cross multiply
    21,759.44x = 30,029 × 12,200.40
  4. Step 4: Simplify right side
    21,759.44x = 366,365,811.60
  5. Step 5: Solve for x
    x = 366,365,811.60/21,759.44
  6. Step 6: Final answer
    x = 16,837.10

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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.