Home / 38,854.20-53,618.22-21,857.16

Finding the Fourth Proportional to 38,854.20, 53,618.22 and 21,857.16

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Solution

The fourth proportional to 38,854.20, 53,618.22 and 21,857.16 is: 30,162.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,854.20 : 53,618.22 = 21,857.16 : x
  2. Step 2: Convert to fraction form
    38,854.20/53,618.22 = 21,857.16/x
  3. Step 3: Cross multiply
    38,854.20x = 53,618.22 × 21,857.16
  4. Step 4: Simplify right side
    38,854.20x = 1,171,942,013.46
  5. Step 5: Solve for x
    x = 1,171,942,013.46/38,854.20
  6. Step 6: Final answer
    x = 30,162.56

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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.