Home / 11,009.32-16,513.98-3,989.17

Finding the Fourth Proportional to 11,009.32, 16,513.98 and 3,989.17

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Solution

The fourth proportional to 11,009.32, 16,513.98 and 3,989.17 is: 5,983.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,009.32 : 16,513.98 = 3,989.17 : x
  2. Step 2: Convert to fraction form
    11,009.32/16,513.98 = 3,989.17/x
  3. Step 3: Cross multiply
    11,009.32x = 16,513.98 × 3,989.17
  4. Step 4: Simplify right side
    11,009.32x = 65,877,073.60
  5. Step 5: Solve for x
    x = 65,877,073.60/11,009.32
  6. Step 6: Final answer
    x = 5,983.76

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.