Home / 20,552.96-28,365.78-15,262.88

Finding the Fourth Proportional to 20,552.96, 28,365.78 and 15,262.88

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Solution

The fourth proportional to 20,552.96, 28,365.78 and 15,262.88 is: 21,064.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,552.96 : 28,365.78 = 15,262.88 : x
  2. Step 2: Convert to fraction form
    20,552.96/28,365.78 = 15,262.88/x
  3. Step 3: Cross multiply
    20,552.96x = 28,365.78 × 15,262.88
  4. Step 4: Simplify right side
    20,552.96x = 432,943,496.25
  5. Step 5: Solve for x
    x = 432,943,496.25/20,552.96
  6. Step 6: Final answer
    x = 21,064.78

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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.