Home / 38,645.91-57,988.64-18,405.58

Finding the Fourth Proportional to 38,645.91, 57,988.64 and 18,405.58

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Solution

The fourth proportional to 38,645.91, 57,988.64 and 18,405.58 is: 27,617.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,645.91 : 57,988.64 = 18,405.58 : x
  2. Step 2: Convert to fraction form
    38,645.91/57,988.64 = 18,405.58/x
  3. Step 3: Cross multiply
    38,645.91x = 57,988.64 × 18,405.58
  4. Step 4: Simplify right side
    38,645.91x = 1,067,314,552.61
  5. Step 5: Solve for x
    x = 1,067,314,552.61/38,645.91
  6. Step 6: Final answer
    x = 27,617.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.