Home / 28,580.21-39,678.27-27,724.85

Finding the Fourth Proportional to 28,580.21, 39,678.27 and 27,724.85

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Solution

The fourth proportional to 28,580.21, 39,678.27 and 27,724.85 is: 38,490.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,580.21 : 39,678.27 = 27,724.85 : x
  2. Step 2: Convert to fraction form
    28,580.21/39,678.27 = 27,724.85/x
  3. Step 3: Cross multiply
    28,580.21x = 39,678.27 × 27,724.85
  4. Step 4: Simplify right side
    28,580.21x = 1,100,074,084.01
  5. Step 5: Solve for x
    x = 1,100,074,084.01/28,580.21
  6. Step 6: Final answer
    x = 38,490.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.