Home / 28,538.06-39,379.84-19,320.86

Finding the Fourth Proportional to 28,538.06, 39,379.84 and 19,320.86

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Solution

The fourth proportional to 28,538.06, 39,379.84 and 19,320.86 is: 26,660.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,538.06 : 39,379.84 = 19,320.86 : x
  2. Step 2: Convert to fraction form
    28,538.06/39,379.84 = 19,320.86/x
  3. Step 3: Cross multiply
    28,538.06x = 39,379.84 × 19,320.86
  4. Step 4: Simplify right side
    28,538.06x = 760,852,425.61
  5. Step 5: Solve for x
    x = 760,852,425.61/28,538.06
  6. Step 6: Final answer
    x = 26,660.97

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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.