Home / 13,352.38-18,426.76-8,636.65

Finding the Fourth Proportional to 13,352.38, 18,426.76 and 8,636.65

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Solution

The fourth proportional to 13,352.38, 18,426.76 and 8,636.65 is: 11,918.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,352.38 : 18,426.76 = 8,636.65 : x
  2. Step 2: Convert to fraction form
    13,352.38/18,426.76 = 8,636.65/x
  3. Step 3: Cross multiply
    13,352.38x = 18,426.76 × 8,636.65
  4. Step 4: Simplify right side
    13,352.38x = 159,145,409.10
  5. Step 5: Solve for x
    x = 159,145,409.10/13,352.38
  6. Step 6: Final answer
    x = 11,918.88

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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.