Home / 28,316.91-39,078.33-15,571.06

Finding the Fourth Proportional to 28,316.91, 39,078.33 and 15,571.06

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Solution

The fourth proportional to 28,316.91, 39,078.33 and 15,571.06 is: 21,488.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,316.91 : 39,078.33 = 15,571.06 : x
  2. Step 2: Convert to fraction form
    28,316.91/39,078.33 = 15,571.06/x
  3. Step 3: Cross multiply
    28,316.91x = 39,078.33 × 15,571.06
  4. Step 4: Simplify right side
    28,316.91x = 608,491,021.13
  5. Step 5: Solve for x
    x = 608,491,021.13/28,316.91
  6. Step 6: Final answer
    x = 21,488.61

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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.