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Finding the Fourth Proportional to 19,923.95, 29,888.09 and 7,449.95

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Solution

The fourth proportional to 19,923.95, 29,888.09 and 7,449.95 is: 11,175.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,923.95 : 29,888.09 = 7,449.95 : x
  2. Step 2: Convert to fraction form
    19,923.95/29,888.09 = 7,449.95/x
  3. Step 3: Cross multiply
    19,923.95x = 29,888.09 × 7,449.95
  4. Step 4: Simplify right side
    19,923.95x = 222,664,776.10
  5. Step 5: Solve for x
    x = 222,664,776.10/19,923.95
  6. Step 6: Final answer
    x = 11,175.73

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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.