Home / 13,118.05-18,081.28-9,284.74

Finding the Fourth Proportional to 13,118.05, 18,081.28 and 9,284.74

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Solution

The fourth proportional to 13,118.05, 18,081.28 and 9,284.74 is: 12,797.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.05 : 18,081.28 = 9,284.74 : x
  2. Step 2: Convert to fraction form
    13,118.05/18,081.28 = 9,284.74/x
  3. Step 3: Cross multiply
    13,118.05x = 18,081.28 × 9,284.74
  4. Step 4: Simplify right side
    13,118.05x = 167,879,983.67
  5. Step 5: Solve for x
    x = 167,879,983.67/13,118.05
  6. Step 6: Final answer
    x = 12,797.63

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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.