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Finding the Fourth Proportional to 28,334.40, 39,022.32 and 27,722.40

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Solution

The fourth proportional to 28,334.40, 39,022.32 and 27,722.40 is: 38,179.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,334.40 : 39,022.32 = 27,722.40 : x
  2. Step 2: Convert to fraction form
    28,334.40/39,022.32 = 27,722.40/x
  3. Step 3: Cross multiply
    28,334.40x = 39,022.32 × 27,722.40
  4. Step 4: Simplify right side
    28,334.40x = 1,081,792,363.97
  5. Step 5: Solve for x
    x = 1,081,792,363.97/28,334.40
  6. Step 6: Final answer
    x = 38,179.47

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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.