Home / 28,527.66-39,365.15-15,778.82

Finding the Fourth Proportional to 28,527.66, 39,365.15 and 15,778.82

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Solution

The fourth proportional to 28,527.66, 39,365.15 and 15,778.82 is: 21,773.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,527.66 : 39,365.15 = 15,778.82 : x
  2. Step 2: Convert to fraction form
    28,527.66/39,365.15 = 15,778.82/x
  3. Step 3: Cross multiply
    28,527.66x = 39,365.15 × 15,778.82
  4. Step 4: Simplify right side
    28,527.66x = 621,135,340.40
  5. Step 5: Solve for x
    x = 621,135,340.40/28,527.66
  6. Step 6: Final answer
    x = 21,773.09

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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.