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Finding the Fourth Proportional to 19,923.31, 29,888.25 and 7,447.69

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Solution

The fourth proportional to 19,923.31, 29,888.25 and 7,447.69 is: 11,172.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,923.31 : 29,888.25 = 7,447.69 : x
  2. Step 2: Convert to fraction form
    19,923.31/29,888.25 = 7,447.69/x
  3. Step 3: Cross multiply
    19,923.31x = 29,888.25 × 7,447.69
  4. Step 4: Simplify right side
    19,923.31x = 222,598,420.64
  5. Step 5: Solve for x
    x = 222,598,420.64/19,923.31
  6. Step 6: Final answer
    x = 11,172.76

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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.