Home / 20,552.69-28,362.71-11,121.25

Finding the Fourth Proportional to 20,552.69, 28,362.71 and 11,121.25

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Solution

The fourth proportional to 20,552.69, 28,362.71 and 11,121.25 is: 15,347.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,552.69 : 28,362.71 = 11,121.25 : x
  2. Step 2: Convert to fraction form
    20,552.69/28,362.71 = 11,121.25/x
  3. Step 3: Cross multiply
    20,552.69x = 28,362.71 × 11,121.25
  4. Step 4: Simplify right side
    20,552.69x = 315,428,788.59
  5. Step 5: Solve for x
    x = 315,428,788.59/20,552.69
  6. Step 6: Final answer
    x = 15,347.32

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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.