Home / 28,264.69-39,005.11-15,518.09

Finding the Fourth Proportional to 28,264.69, 39,005.11 and 15,518.09

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Solution

The fourth proportional to 28,264.69, 39,005.11 and 15,518.09 is: 21,414.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,264.69 : 39,005.11 = 15,518.09 : x
  2. Step 2: Convert to fraction form
    28,264.69/39,005.11 = 15,518.09/x
  3. Step 3: Cross multiply
    28,264.69x = 39,005.11 × 15,518.09
  4. Step 4: Simplify right side
    28,264.69x = 605,284,924.35
  5. Step 5: Solve for x
    x = 605,284,924.35/28,264.69
  6. Step 6: Final answer
    x = 21,414.88

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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.