Home / 19,938.12-29,882.55-10,080.21

Finding the Fourth Proportional to 19,938.12, 29,882.55 and 10,080.21

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Solution

The fourth proportional to 19,938.12, 29,882.55 and 10,080.21 is: 15,107.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,938.12 : 29,882.55 = 10,080.21 : x
  2. Step 2: Convert to fraction form
    19,938.12/29,882.55 = 10,080.21/x
  3. Step 3: Cross multiply
    19,938.12x = 29,882.55 × 10,080.21
  4. Step 4: Simplify right side
    19,938.12x = 301,222,379.34
  5. Step 5: Solve for x
    x = 301,222,379.34/19,938.12
  6. Step 6: Final answer
    x = 15,107.86

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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.