Home / 13,313.21-18,372.12-7,345.13

Finding the Fourth Proportional to 13,313.21, 18,372.12 and 7,345.13

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Solution

The fourth proportional to 13,313.21, 18,372.12 and 7,345.13 is: 10,136.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,313.21 : 18,372.12 = 7,345.13 : x
  2. Step 2: Convert to fraction form
    13,313.21/18,372.12 = 7,345.13/x
  3. Step 3: Cross multiply
    13,313.21x = 18,372.12 × 7,345.13
  4. Step 4: Simplify right side
    13,313.21x = 134,945,609.78
  5. Step 5: Solve for x
    x = 134,945,609.78/13,313.21
  6. Step 6: Final answer
    x = 10,136.22

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Find fourth proportional to 13,314.21, 18,373.50 and 7,346.13
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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.