Home / 11,319.36-15,618.06-6,601.92

Finding the Fourth Proportional to 11,319.36, 15,618.06 and 6,601.92

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Solution

The fourth proportional to 11,319.36, 15,618.06 and 6,601.92 is: 9,109.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,319.36 : 15,618.06 = 6,601.92 : x
  2. Step 2: Convert to fraction form
    11,319.36/15,618.06 = 6,601.92/x
  3. Step 3: Cross multiply
    11,319.36x = 15,618.06 × 6,601.92
  4. Step 4: Simplify right side
    11,319.36x = 103,109,182.68
  5. Step 5: Solve for x
    x = 103,109,182.68/11,319.36
  6. Step 6: Final answer
    x = 9,109.10

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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.