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Finding the Fourth Proportional to 18,791.46, 28,187.17 and 7,698.17

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Solution

The fourth proportional to 18,791.46, 28,187.17 and 7,698.17 is: 11,547.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,791.46 : 28,187.17 = 7,698.17 : x
  2. Step 2: Convert to fraction form
    18,791.46/28,187.17 = 7,698.17/x
  3. Step 3: Cross multiply
    18,791.46x = 28,187.17 × 7,698.17
  4. Step 4: Simplify right side
    18,791.46x = 216,989,626.48
  5. Step 5: Solve for x
    x = 216,989,626.48/18,791.46
  6. Step 6: Final answer
    x = 11,547.25

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.