Home / 21,099.69-29,116.39-11,537.68

Finding the Fourth Proportional to 21,099.69, 29,116.39 and 11,537.68

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Solution

The fourth proportional to 21,099.69, 29,116.39 and 11,537.68 is: 15,921.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,099.69 : 29,116.39 = 11,537.68 : x
  2. Step 2: Convert to fraction form
    21,099.69/29,116.39 = 11,537.68/x
  3. Step 3: Cross multiply
    21,099.69x = 29,116.39 × 11,537.68
  4. Step 4: Simplify right side
    21,099.69x = 335,935,444.99
  5. Step 5: Solve for x
    x = 335,935,444.99/21,099.69
  6. Step 6: Final answer
    x = 15,921.35

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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.