Home / 28,553.40-39,404.94-15,978.36

Finding the Fourth Proportional to 28,553.40, 39,404.94 and 15,978.36

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Solution

The fourth proportional to 28,553.40, 39,404.94 and 15,978.36 is: 22,050.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,553.40 : 39,404.94 = 15,978.36 : x
  2. Step 2: Convert to fraction form
    28,553.40/39,404.94 = 15,978.36/x
  3. Step 3: Cross multiply
    28,553.40x = 39,404.94 × 15,978.36
  4. Step 4: Simplify right side
    28,553.40x = 629,626,317.10
  5. Step 5: Solve for x
    x = 629,626,317.10/28,553.40
  6. Step 6: Final answer
    x = 22,050.84

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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.