Home / 38,865.62-53,621.12-21,867.17

Finding the Fourth Proportional to 38,865.62, 53,621.12 and 21,867.17

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Solution

The fourth proportional to 38,865.62, 53,621.12 and 21,867.17 is: 30,169.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,865.62 : 53,621.12 = 21,867.17 : x
  2. Step 2: Convert to fraction form
    38,865.62/53,621.12 = 21,867.17/x
  3. Step 3: Cross multiply
    38,865.62x = 53,621.12 × 21,867.17
  4. Step 4: Simplify right side
    38,865.62x = 1,172,541,933.19
  5. Step 5: Solve for x
    x = 1,172,541,933.19/38,865.62
  6. Step 6: Final answer
    x = 30,169.13

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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.