Home / 15,228.39-21,013.83-8,513.13

Finding the Fourth Proportional to 15,228.39, 21,013.83 and 8,513.13

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Solution

The fourth proportional to 15,228.39, 21,013.83 and 8,513.13 is: 11,747.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,228.39 : 21,013.83 = 8,513.13 : x
  2. Step 2: Convert to fraction form
    15,228.39/21,013.83 = 8,513.13/x
  3. Step 3: Cross multiply
    15,228.39x = 21,013.83 × 8,513.13
  4. Step 4: Simplify right side
    15,228.39x = 178,893,466.59
  5. Step 5: Solve for x
    x = 178,893,466.59/15,228.39
  6. Step 6: Final answer
    x = 11,747.37

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Half scale
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Double scale
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Similar ratio
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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.