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Finding the Fourth Proportional to 18,798.08, 28,248.32 and 18,106.88

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Solution

The fourth proportional to 18,798.08, 28,248.32 and 18,106.88 is: 27,209.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,798.08 : 28,248.32 = 18,106.88 : x
  2. Step 2: Convert to fraction form
    18,798.08/28,248.32 = 18,106.88/x
  3. Step 3: Cross multiply
    18,798.08x = 28,248.32 × 18,106.88
  4. Step 4: Simplify right side
    18,798.08x = 511,488,940.44
  5. Step 5: Solve for x
    x = 511,488,940.44/18,798.08
  6. Step 6: Final answer
    x = 27,209.64

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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.