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Finding the Fourth Proportional to 18,964.94, 28,451.08 and 7,277.25

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Solution

The fourth proportional to 18,964.94, 28,451.08 and 7,277.25 is: 10,917.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,964.94 : 28,451.08 = 7,277.25 : x
  2. Step 2: Convert to fraction form
    18,964.94/28,451.08 = 7,277.25/x
  3. Step 3: Cross multiply
    18,964.94x = 28,451.08 × 7,277.25
  4. Step 4: Simplify right side
    18,964.94x = 207,045,695.74
  5. Step 5: Solve for x
    x = 207,045,695.74/18,964.94
  6. Step 6: Final answer
    x = 10,917.29

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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.