Home / 13,288.73-18,338.67-7,319.97

Finding the Fourth Proportional to 13,288.73, 18,338.67 and 7,319.97

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Solution

The fourth proportional to 13,288.73, 18,338.67 and 7,319.97 is: 10,101.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.73 : 18,338.67 = 7,319.97 : x
  2. Step 2: Convert to fraction form
    13,288.73/18,338.67 = 7,319.97/x
  3. Step 3: Cross multiply
    13,288.73x = 18,338.67 × 7,319.97
  4. Step 4: Simplify right side
    13,288.73x = 134,238,514.24
  5. Step 5: Solve for x
    x = 134,238,514.24/13,288.73
  6. Step 6: Final answer
    x = 10,101.69

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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.