Home / 12,279.71-18,427.64-6,736.95

Finding the Fourth Proportional to 12,279.71, 18,427.64 and 6,736.95

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Solution

The fourth proportional to 12,279.71, 18,427.64 and 6,736.95 is: 10,109.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,279.71 : 18,427.64 = 6,736.95 : x
  2. Step 2: Convert to fraction form
    12,279.71/18,427.64 = 6,736.95/x
  3. Step 3: Cross multiply
    12,279.71x = 18,427.64 × 6,736.95
  4. Step 4: Simplify right side
    12,279.71x = 124,146,055.61
  5. Step 5: Solve for x
    x = 124,146,055.61/12,279.71
  6. Step 6: Final answer
    x = 10,109.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.