Home / 15,105.35-20,843.79-8,730.93

Finding the Fourth Proportional to 15,105.35, 20,843.79 and 8,730.93

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Solution

The fourth proportional to 15,105.35, 20,843.79 and 8,730.93 is: 12,047.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,105.35 : 20,843.79 = 8,730.93 : x
  2. Step 2: Convert to fraction form
    15,105.35/20,843.79 = 8,730.93/x
  3. Step 3: Cross multiply
    15,105.35x = 20,843.79 × 8,730.93
  4. Step 4: Simplify right side
    15,105.35x = 181,985,735.96
  5. Step 5: Solve for x
    x = 181,985,735.96/15,105.35
  6. Step 6: Final answer
    x = 12,047.76

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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.