Home / 13,118.91-18,097.27-8,330.66

Finding the Fourth Proportional to 13,118.91, 18,097.27 and 8,330.66

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Solution

The fourth proportional to 13,118.91, 18,097.27 and 8,330.66 is: 11,491.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.91 : 18,097.27 = 8,330.66 : x
  2. Step 2: Convert to fraction form
    13,118.91/18,097.27 = 8,330.66/x
  3. Step 3: Cross multiply
    13,118.91x = 18,097.27 × 8,330.66
  4. Step 4: Simplify right side
    13,118.91x = 150,762,071.16
  5. Step 5: Solve for x
    x = 150,762,071.16/13,118.91
  6. Step 6: Final answer
    x = 11,491.97

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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.