Home / 20,552.54-28,362.45-11,121.10

Finding the Fourth Proportional to 20,552.54, 28,362.45 and 11,121.10

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Solution

The fourth proportional to 20,552.54, 28,362.45 and 11,121.10 is: 15,347.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,552.54 : 28,362.45 = 11,121.10 : x
  2. Step 2: Convert to fraction form
    20,552.54/28,362.45 = 11,121.10/x
  3. Step 3: Cross multiply
    20,552.54x = 28,362.45 × 11,121.10
  4. Step 4: Simplify right side
    20,552.54x = 315,421,613.49
  5. Step 5: Solve for x
    x = 315,421,613.49/20,552.54
  6. Step 6: Final answer
    x = 15,347.09

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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.