Home / 15,849.52-21,872.36-8,775.79

Finding the Fourth Proportional to 15,849.52, 21,872.36 and 8,775.79

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Solution

The fourth proportional to 15,849.52, 21,872.36 and 8,775.79 is: 12,110.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,849.52 : 21,872.36 = 8,775.79 : x
  2. Step 2: Convert to fraction form
    15,849.52/21,872.36 = 8,775.79/x
  3. Step 3: Cross multiply
    15,849.52x = 21,872.36 × 8,775.79
  4. Step 4: Simplify right side
    15,849.52x = 191,947,238.16
  5. Step 5: Solve for x
    x = 191,947,238.16/15,849.52
  6. Step 6: Final answer
    x = 12,110.60

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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.