Home / 13,114.19-18,097.79-7,145.87

Finding the Fourth Proportional to 13,114.19, 18,097.79 and 7,145.87

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Solution

The fourth proportional to 13,114.19, 18,097.79 and 7,145.87 is: 9,861.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,114.19 : 18,097.79 = 7,145.87 : x
  2. Step 2: Convert to fraction form
    13,114.19/18,097.79 = 7,145.87/x
  3. Step 3: Cross multiply
    13,114.19x = 18,097.79 × 7,145.87
  4. Step 4: Simplify right side
    13,114.19x = 129,324,328.41
  5. Step 5: Solve for x
    x = 129,324,328.41/13,114.19
  6. Step 6: Final answer
    x = 9,861.41

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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.