Home / 13,149.08-18,162.48-10,105.72

Finding the Fourth Proportional to 13,149.08, 18,162.48 and 10,105.72

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Solution

The fourth proportional to 13,149.08, 18,162.48 and 10,105.72 is: 13,958.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.08 : 18,162.48 = 10,105.72 : x
  2. Step 2: Convert to fraction form
    13,149.08/18,162.48 = 10,105.72/x
  3. Step 3: Cross multiply
    13,149.08x = 18,162.48 × 10,105.72
  4. Step 4: Simplify right side
    13,149.08x = 183,544,937.39
  5. Step 5: Solve for x
    x = 183,544,937.39/13,149.08
  6. Step 6: Final answer
    x = 13,958.77

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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.