Home / 15,377.88-21,223.49-8,664.83

Finding the Fourth Proportional to 15,377.88, 21,223.49 and 8,664.83

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Solution

The fourth proportional to 15,377.88, 21,223.49 and 8,664.83 is: 11,958.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,377.88 : 21,223.49 = 8,664.83 : x
  2. Step 2: Convert to fraction form
    15,377.88/21,223.49 = 8,664.83/x
  3. Step 3: Cross multiply
    15,377.88x = 21,223.49 × 8,664.83
  4. Step 4: Simplify right side
    15,377.88x = 183,897,783.42
  5. Step 5: Solve for x
    x = 183,897,783.42/15,377.88
  6. Step 6: Final answer
    x = 11,958.59

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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.