Home / 15,406.75-21,261.30-8,333.17

Finding the Fourth Proportional to 15,406.75, 21,261.30 and 8,333.17

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Solution

The fourth proportional to 15,406.75, 21,261.30 and 8,333.17 is: 11,499.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,406.75 : 21,261.30 = 8,333.17 : x
  2. Step 2: Convert to fraction form
    15,406.75/21,261.30 = 8,333.17/x
  3. Step 3: Cross multiply
    15,406.75x = 21,261.30 × 8,333.17
  4. Step 4: Simplify right side
    15,406.75x = 177,173,942.92
  5. Step 5: Solve for x
    x = 177,173,942.92/15,406.75
  6. Step 6: Final answer
    x = 11,499.76

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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.