Home / 38,867.62-53,623.88-21,869.16

Finding the Fourth Proportional to 38,867.62, 53,623.88 and 21,869.16

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Solution

The fourth proportional to 38,867.62, 53,623.88 and 21,869.16 is: 30,171.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,867.62 : 53,623.88 = 21,869.16 : x
  2. Step 2: Convert to fraction form
    38,867.62/53,623.88 = 21,869.16/x
  3. Step 3: Cross multiply
    38,867.62x = 53,623.88 × 21,869.16
  4. Step 4: Simplify right side
    38,867.62x = 1,172,709,211.54
  5. Step 5: Solve for x
    x = 1,172,709,211.54/38,867.62
  6. Step 6: Final answer
    x = 30,171.88

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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.