Home / 38,653.86-57,987.71-19,928.87

Finding the Fourth Proportional to 38,653.86, 57,987.71 and 19,928.87

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Solution

The fourth proportional to 38,653.86, 57,987.71 and 19,928.87 is: 29,896.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,653.86 : 57,987.71 = 19,928.87 : x
  2. Step 2: Convert to fraction form
    38,653.86/57,987.71 = 19,928.87/x
  3. Step 3: Cross multiply
    38,653.86x = 57,987.71 × 19,928.87
  4. Step 4: Simplify right side
    38,653.86x = 1,155,629,534.19
  5. Step 5: Solve for x
    x = 1,155,629,534.19/38,653.86
  6. Step 6: Final answer
    x = 29,896.87

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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.