Home / 13,607.75-20,411.63-5,399.75

Finding the Fourth Proportional to 13,607.75, 20,411.63 and 5,399.75

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Solution

The fourth proportional to 13,607.75, 20,411.63 and 5,399.75 is: 8,099.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,607.75 : 20,411.63 = 5,399.75 : x
  2. Step 2: Convert to fraction form
    13,607.75/20,411.63 = 5,399.75/x
  3. Step 3: Cross multiply
    13,607.75x = 20,411.63 × 5,399.75
  4. Step 4: Simplify right side
    13,607.75x = 110,217,699.09
  5. Step 5: Solve for x
    x = 110,217,699.09/13,607.75
  6. Step 6: Final answer
    x = 8,099.63

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