Home / 13,113.91-18,096.96-7,145.62

Finding the Fourth Proportional to 13,113.91, 18,096.96 and 7,145.62

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Solution

The fourth proportional to 13,113.91, 18,096.96 and 7,145.62 is: 9,860.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.91 : 18,096.96 = 7,145.62 : x
  2. Step 2: Convert to fraction form
    13,113.91/18,096.96 = 7,145.62/x
  3. Step 3: Cross multiply
    13,113.91x = 18,096.96 × 7,145.62
  4. Step 4: Simplify right side
    13,113.91x = 129,314,071.35
  5. Step 5: Solve for x
    x = 129,314,071.35/13,113.91
  6. Step 6: Final answer
    x = 9,860.83

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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.