Home / 28,627.86-39,508.74-15,882.30

Finding the Fourth Proportional to 28,627.86, 39,508.74 and 15,882.30

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Solution

The fourth proportional to 28,627.86, 39,508.74 and 15,882.30 is: 21,918.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,627.86 : 39,508.74 = 15,882.30 : x
  2. Step 2: Convert to fraction form
    28,627.86/39,508.74 = 15,882.30/x
  3. Step 3: Cross multiply
    28,627.86x = 39,508.74 × 15,882.30
  4. Step 4: Simplify right side
    28,627.86x = 627,489,661.30
  5. Step 5: Solve for x
    x = 627,489,661.30/28,627.86
  6. Step 6: Final answer
    x = 21,918.85

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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.