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Finding the Fourth Proportional to 28,242.94, 38,976.88 and 17,068.54

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Solution

The fourth proportional to 28,242.94, 38,976.88 and 17,068.54 is: 23,555.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,242.94 : 38,976.88 = 17,068.54 : x
  2. Step 2: Convert to fraction form
    28,242.94/38,976.88 = 17,068.54/x
  3. Step 3: Cross multiply
    28,242.94x = 38,976.88 × 17,068.54
  4. Step 4: Simplify right side
    28,242.94x = 665,278,435.36
  5. Step 5: Solve for x
    x = 665,278,435.36/28,242.94
  6. Step 6: Final answer
    x = 23,555.57

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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.