Home / 19,918.42-29,882.82-7,438.55

Finding the Fourth Proportional to 19,918.42, 29,882.82 and 7,438.55

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Solution

The fourth proportional to 19,918.42, 29,882.82 and 7,438.55 is: 11,159.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918.42 : 29,882.82 = 7,438.55 : x
  2. Step 2: Convert to fraction form
    19,918.42/29,882.82 = 7,438.55/x
  3. Step 3: Cross multiply
    19,918.42x = 29,882.82 × 7,438.55
  4. Step 4: Simplify right side
    19,918.42x = 222,284,850.71
  5. Step 5: Solve for x
    x = 222,284,850.71/19,918.42
  6. Step 6: Final answer
    x = 11,159.76

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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.