Home / 28,553.61-39,404.51-15,978.33

Finding the Fourth Proportional to 28,553.61, 39,404.51 and 15,978.33

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Solution

The fourth proportional to 28,553.61, 39,404.51 and 15,978.33 is: 22,050.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,553.61 : 39,404.51 = 15,978.33 : x
  2. Step 2: Convert to fraction form
    28,553.61/39,404.51 = 15,978.33/x
  3. Step 3: Cross multiply
    28,553.61x = 39,404.51 × 15,978.33
  4. Step 4: Simplify right side
    28,553.61x = 629,618,184.38
  5. Step 5: Solve for x
    x = 629,618,184.38/28,553.61
  6. Step 6: Final answer
    x = 22,050.39

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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.