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Finding the Fourth Proportional to 27,928.40, 39,151.60 and 27,928.40

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Solution

The fourth proportional to 27,928.40, 39,151.60 and 27,928.40 is: 39,151.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,928.40 : 39,151.60 = 27,928.40 : x
  2. Step 2: Convert to fraction form
    27,928.40/39,151.60 = 27,928.40/x
  3. Step 3: Cross multiply
    27,928.40x = 39,151.60 × 27,928.40
  4. Step 4: Simplify right side
    27,928.40x = 1,093,441,545.44
  5. Step 5: Solve for x
    x = 1,093,441,545.44/27,928.40
  6. Step 6: Final answer
    x = 39,151.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.