Home / 13,134.09-18,118.98-8,879.70

Finding the Fourth Proportional to 13,134.09, 18,118.98 and 8,879.70

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Solution

The fourth proportional to 13,134.09, 18,118.98 and 8,879.70 is: 12,249.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,134.09 : 18,118.98 = 8,879.70 : x
  2. Step 2: Convert to fraction form
    13,134.09/18,118.98 = 8,879.70/x
  3. Step 3: Cross multiply
    13,134.09x = 18,118.98 × 8,879.70
  4. Step 4: Simplify right side
    13,134.09x = 160,891,106.71
  5. Step 5: Solve for x
    x = 160,891,106.71/13,134.09
  6. Step 6: Final answer
    x = 12,249.89

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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.