Home / 38,868.54-53,638.14-21,872.71

Finding the Fourth Proportional to 38,868.54, 53,638.14 and 21,872.71

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Solution

The fourth proportional to 38,868.54, 53,638.14 and 21,872.71 is: 30,184.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,868.54 : 53,638.14 = 21,872.71 : x
  2. Step 2: Convert to fraction form
    38,868.54/53,638.14 = 21,872.71/x
  3. Step 3: Cross multiply
    38,868.54x = 53,638.14 × 21,872.71
  4. Step 4: Simplify right side
    38,868.54x = 1,173,211,481.16
  5. Step 5: Solve for x
    x = 1,173,211,481.16/38,868.54
  6. Step 6: Final answer
    x = 30,184.09

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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.