Home / 13,631.91-18,812.33-8,329.65

Finding the Fourth Proportional to 13,631.91, 18,812.33 and 8,329.65

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Solution

The fourth proportional to 13,631.91, 18,812.33 and 8,329.65 is: 11,495.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.91 : 18,812.33 = 8,329.65 : x
  2. Step 2: Convert to fraction form
    13,631.91/18,812.33 = 8,329.65/x
  3. Step 3: Cross multiply
    13,631.91x = 18,812.33 × 8,329.65
  4. Step 4: Simplify right side
    13,631.91x = 156,700,145.41
  5. Step 5: Solve for x
    x = 156,700,145.41/13,631.91
  6. Step 6: Final answer
    x = 11,495.10

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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.