Home / 19,147.72-28,729.77-10,388.92

Finding the Fourth Proportional to 19,147.72, 28,729.77 and 10,388.92

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Solution

The fourth proportional to 19,147.72, 28,729.77 and 10,388.92 is: 15,587.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,147.72 : 28,729.77 = 10,388.92 : x
  2. Step 2: Convert to fraction form
    19,147.72/28,729.77 = 10,388.92/x
  3. Step 3: Cross multiply
    19,147.72x = 28,729.77 × 10,388.92
  4. Step 4: Simplify right side
    19,147.72x = 298,471,282.15
  5. Step 5: Solve for x
    x = 298,471,282.15/19,147.72
  6. Step 6: Final answer
    x = 15,587.82

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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.