Home / 12,189.61-16,819.95-6,811.37

Finding the Fourth Proportional to 12,189.61, 16,819.95 and 6,811.37

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Solution

The fourth proportional to 12,189.61, 16,819.95 and 6,811.37 is: 9,398.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,189.61 : 16,819.95 = 6,811.37 : x
  2. Step 2: Convert to fraction form
    12,189.61/16,819.95 = 6,811.37/x
  3. Step 3: Cross multiply
    12,189.61x = 16,819.95 × 6,811.37
  4. Step 4: Simplify right side
    12,189.61x = 114,566,818.73
  5. Step 5: Solve for x
    x = 114,566,818.73/12,189.61
  6. Step 6: Final answer
    x = 9,398.73

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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.