Home / 13,210.57-18,229.90-7,544.21

Finding the Fourth Proportional to 13,210.57, 18,229.90 and 7,544.21

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Solution

The fourth proportional to 13,210.57, 18,229.90 and 7,544.21 is: 10,410.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,210.57 : 18,229.90 = 7,544.21 : x
  2. Step 2: Convert to fraction form
    13,210.57/18,229.90 = 7,544.21/x
  3. Step 3: Cross multiply
    13,210.57x = 18,229.90 × 7,544.21
  4. Step 4: Simplify right side
    13,210.57x = 137,530,189.95
  5. Step 5: Solve for x
    x = 137,530,189.95/13,210.57
  6. Step 6: Final answer
    x = 10,410.62

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Half scale
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Double scale
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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.