Home / 9,513.76-13,129.44-5,321.68

Finding the Fourth Proportional to 9,513.76, 13,129.44 and 5,321.68

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Solution

The fourth proportional to 9,513.76, 13,129.44 and 5,321.68 is: 7,344.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,513.76 : 13,129.44 = 5,321.68 : x
  2. Step 2: Convert to fraction form
    9,513.76/13,129.44 = 5,321.68/x
  3. Step 3: Cross multiply
    9,513.76x = 13,129.44 × 5,321.68
  4. Step 4: Simplify right side
    9,513.76x = 69,870,678.26
  5. Step 5: Solve for x
    x = 69,870,678.26/9,513.76
  6. Step 6: Final answer
    x = 7,344.17

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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.