Home / 15,335.40-21,163.64-9,668.10

Finding the Fourth Proportional to 15,335.40, 21,163.64 and 9,668.10

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Solution

The fourth proportional to 15,335.40, 21,163.64 and 9,668.10 is: 13,342.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,335.40 : 21,163.64 = 9,668.10 : x
  2. Step 2: Convert to fraction form
    15,335.40/21,163.64 = 9,668.10/x
  3. Step 3: Cross multiply
    15,335.40x = 21,163.64 × 9,668.10
  4. Step 4: Simplify right side
    15,335.40x = 204,612,139.54
  5. Step 5: Solve for x
    x = 204,612,139.54/15,335.40
  6. Step 6: Final answer
    x = 13,342.47

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Half scale
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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.