Home / 15,273.82-21,076.03-8,557.91

Finding the Fourth Proportional to 15,273.82, 21,076.03 and 8,557.91

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Solution

The fourth proportional to 15,273.82, 21,076.03 and 8,557.91 is: 11,808.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,273.82 : 21,076.03 = 8,557.91 : x
  2. Step 2: Convert to fraction form
    15,273.82/21,076.03 = 8,557.91/x
  3. Step 3: Cross multiply
    15,273.82x = 21,076.03 × 8,557.91
  4. Step 4: Simplify right side
    15,273.82x = 180,366,767.90
  5. Step 5: Solve for x
    x = 180,366,767.90/15,273.82
  6. Step 6: Final answer
    x = 11,808.88

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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.