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Finding the Fourth Proportional to 18,767.95, 25,909.15 and 10,808.64

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Solution

The fourth proportional to 18,767.95, 25,909.15 and 10,808.64 is: 14,921.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,767.95 : 25,909.15 = 10,808.64 : x
  2. Step 2: Convert to fraction form
    18,767.95/25,909.15 = 10,808.64/x
  3. Step 3: Cross multiply
    18,767.95x = 25,909.15 × 10,808.64
  4. Step 4: Simplify right side
    18,767.95x = 280,042,675.06
  5. Step 5: Solve for x
    x = 280,042,675.06/18,767.95
  6. Step 6: Final answer
    x = 14,921.32

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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.