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Finding the Fourth Proportional to 18,794.59, 28,151.28 and 17,690.45

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Solution

The fourth proportional to 18,794.59, 28,151.28 and 17,690.45 is: 26,497.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,794.59 : 28,151.28 = 17,690.45 : x
  2. Step 2: Convert to fraction form
    18,794.59/28,151.28 = 17,690.45/x
  3. Step 3: Cross multiply
    18,794.59x = 28,151.28 × 17,690.45
  4. Step 4: Simplify right side
    18,794.59x = 498,008,670.52
  5. Step 5: Solve for x
    x = 498,008,670.52/18,794.59
  6. Step 6: Final answer
    x = 26,497.45

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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.