Home / 13,620.14-18,802.96-9,167.30

Finding the Fourth Proportional to 13,620.14, 18,802.96 and 9,167.30

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Solution

The fourth proportional to 13,620.14, 18,802.96 and 9,167.30 is: 12,655.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620.14 : 18,802.96 = 9,167.30 : x
  2. Step 2: Convert to fraction form
    13,620.14/18,802.96 = 9,167.30/x
  3. Step 3: Cross multiply
    13,620.14x = 18,802.96 × 9,167.30
  4. Step 4: Simplify right side
    13,620.14x = 172,372,375.21
  5. Step 5: Solve for x
    x = 172,372,375.21/13,620.14
  6. Step 6: Final answer
    x = 12,655.70

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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.