Home / 28,404.14-39,199.43-15,657.31

Finding the Fourth Proportional to 28,404.14, 39,199.43 and 15,657.31

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Solution

The fourth proportional to 28,404.14, 39,199.43 and 15,657.31 is: 21,608.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,404.14 : 39,199.43 = 15,657.31 : x
  2. Step 2: Convert to fraction form
    28,404.14/39,199.43 = 15,657.31/x
  3. Step 3: Cross multiply
    28,404.14x = 39,199.43 × 15,657.31
  4. Step 4: Simplify right side
    28,404.14x = 613,757,353.05
  5. Step 5: Solve for x
    x = 613,757,353.05/28,404.14
  6. Step 6: Final answer
    x = 21,608.02

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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.