Home / 28,350.88-39,107.01-17,731.78

Finding the Fourth Proportional to 28,350.88, 39,107.01 and 17,731.78

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Solution

The fourth proportional to 28,350.88, 39,107.01 and 17,731.78 is: 24,459.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,350.88 : 39,107.01 = 17,731.78 : x
  2. Step 2: Convert to fraction form
    28,350.88/39,107.01 = 17,731.78/x
  3. Step 3: Cross multiply
    28,350.88x = 39,107.01 × 17,731.78
  4. Step 4: Simplify right side
    28,350.88x = 693,436,897.78
  5. Step 5: Solve for x
    x = 693,436,897.78/28,350.88
  6. Step 6: Final answer
    x = 24,459.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.