Home / 13,161.83-18,162.50-8,126.33

Finding the Fourth Proportional to 13,161.83, 18,162.50 and 8,126.33

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Solution

The fourth proportional to 13,161.83, 18,162.50 and 8,126.33 is: 11,213.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.83 : 18,162.50 = 8,126.33 : x
  2. Step 2: Convert to fraction form
    13,161.83/18,162.50 = 8,126.33/x
  3. Step 3: Cross multiply
    13,161.83x = 18,162.50 × 8,126.33
  4. Step 4: Simplify right side
    13,161.83x = 147,594,337.18
  5. Step 5: Solve for x
    x = 147,594,337.18/13,161.83
  6. Step 6: Final answer
    x = 11,213.82

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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.