Home / 13,149.06-18,144.96-7,485.19

Finding the Fourth Proportional to 13,149.06, 18,144.96 and 7,485.19

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Solution

The fourth proportional to 13,149.06, 18,144.96 and 7,485.19 is: 10,329.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.06 : 18,144.96 = 7,485.19 : x
  2. Step 2: Convert to fraction form
    13,149.06/18,144.96 = 7,485.19/x
  3. Step 3: Cross multiply
    13,149.06x = 18,144.96 × 7,485.19
  4. Step 4: Simplify right side
    13,149.06x = 135,818,427.78
  5. Step 5: Solve for x
    x = 135,818,427.78/13,149.06
  6. Step 6: Final answer
    x = 10,329.14

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Half scale
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Double scale
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Similar ratio
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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.