Home / 28,387.82-39,176.26-15,813.38

Finding the Fourth Proportional to 28,387.82, 39,176.26 and 15,813.38

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Solution

The fourth proportional to 28,387.82, 39,176.26 and 15,813.38 is: 21,823.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,387.82 : 39,176.26 = 15,813.38 : x
  2. Step 2: Convert to fraction form
    28,387.82/39,176.26 = 15,813.38/x
  3. Step 3: Cross multiply
    28,387.82x = 39,176.26 × 15,813.38
  4. Step 4: Simplify right side
    28,387.82x = 619,509,086.36
  5. Step 5: Solve for x
    x = 619,509,086.36/28,387.82
  6. Step 6: Final answer
    x = 21,823.06

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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.