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Finding the Fourth Proportional to 18,488.45, 27,729.95 and 6,798.94

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Solution

The fourth proportional to 18,488.45, 27,729.95 and 6,798.94 is: 10,197.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,488.45 : 27,729.95 = 6,798.94 : x
  2. Step 2: Convert to fraction form
    18,488.45/27,729.95 = 6,798.94/x
  3. Step 3: Cross multiply
    18,488.45x = 27,729.95 × 6,798.94
  4. Step 4: Simplify right side
    18,488.45x = 188,534,162.93
  5. Step 5: Solve for x
    x = 188,534,162.93/18,488.45
  6. Step 6: Final answer
    x = 10,197.40

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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.