Home / 15,513.15-21,406.36-8,797.44

Finding the Fourth Proportional to 15,513.15, 21,406.36 and 8,797.44

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Solution

The fourth proportional to 15,513.15, 21,406.36 and 8,797.44 is: 12,139.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,513.15 : 21,406.36 = 8,797.44 : x
  2. Step 2: Convert to fraction form
    15,513.15/21,406.36 = 8,797.44/x
  3. Step 3: Cross multiply
    15,513.15x = 21,406.36 × 8,797.44
  4. Step 4: Simplify right side
    15,513.15x = 188,321,167.72
  5. Step 5: Solve for x
    x = 188,321,167.72/15,513.15
  6. Step 6: Final answer
    x = 12,139.45

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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.