Home / 15,819.86-21,832.71-8,747.66

Finding the Fourth Proportional to 15,819.86, 21,832.71 and 8,747.66

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Solution

The fourth proportional to 15,819.86, 21,832.71 and 8,747.66 is: 12,072.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,819.86 : 21,832.71 = 8,747.66 : x
  2. Step 2: Convert to fraction form
    15,819.86/21,832.71 = 8,747.66/x
  3. Step 3: Cross multiply
    15,819.86x = 21,832.71 × 8,747.66
  4. Step 4: Simplify right side
    15,819.86x = 190,985,123.96
  5. Step 5: Solve for x
    x = 190,985,123.96/15,819.86
  6. Step 6: Final answer
    x = 12,072.49

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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.