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Finding the Fourth Proportional to 18,690.39, 28,036.95 and 7,597.29

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Solution

The fourth proportional to 18,690.39, 28,036.95 and 7,597.29 is: 11,396.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,690.39 : 28,036.95 = 7,597.29 : x
  2. Step 2: Convert to fraction form
    18,690.39/28,036.95 = 7,597.29/x
  3. Step 3: Cross multiply
    18,690.39x = 28,036.95 × 7,597.29
  4. Step 4: Simplify right side
    18,690.39x = 213,004,839.87
  5. Step 5: Solve for x
    x = 213,004,839.87/18,690.39
  6. Step 6: Final answer
    x = 11,396.49

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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.