Home / 13,498.54-18,631.31-9,198.74

Finding the Fourth Proportional to 13,498.54, 18,631.31 and 9,198.74

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Solution

The fourth proportional to 13,498.54, 18,631.31 and 9,198.74 is: 12,696.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,498.54 : 18,631.31 = 9,198.74 : x
  2. Step 2: Convert to fraction form
    13,498.54/18,631.31 = 9,198.74/x
  3. Step 3: Cross multiply
    13,498.54x = 18,631.31 × 9,198.74
  4. Step 4: Simplify right side
    13,498.54x = 171,384,577.13
  5. Step 5: Solve for x
    x = 171,384,577.13/13,498.54
  6. Step 6: Final answer
    x = 12,696.53

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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.