Home / 28,921.16-39,933.80-22,196.13

Finding the Fourth Proportional to 28,921.16, 39,933.80 and 22,196.13

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Solution

The fourth proportional to 28,921.16, 39,933.80 and 22,196.13 is: 30,648.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,921.16 : 39,933.80 = 22,196.13 : x
  2. Step 2: Convert to fraction form
    28,921.16/39,933.80 = 22,196.13/x
  3. Step 3: Cross multiply
    28,921.16x = 39,933.80 × 22,196.13
  4. Step 4: Simplify right side
    28,921.16x = 886,375,705.21
  5. Step 5: Solve for x
    x = 886,375,705.21/28,921.16
  6. Step 6: Final answer
    x = 30,648.01

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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.