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Finding the Fourth Proportional to 18,723.25, 28,106.48 and 9,508.69

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Solution

The fourth proportional to 18,723.25, 28,106.48 and 9,508.69 is: 14,274.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,723.25 : 28,106.48 = 9,508.69 : x
  2. Step 2: Convert to fraction form
    18,723.25/28,106.48 = 9,508.69/x
  3. Step 3: Cross multiply
    18,723.25x = 28,106.48 × 9,508.69
  4. Step 4: Simplify right side
    18,723.25x = 267,255,805.31
  5. Step 5: Solve for x
    x = 267,255,805.31/18,723.25
  6. Step 6: Final answer
    x = 14,274.01

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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.