Home / 10,727.60-16,102.20-5,185.40

Finding the Fourth Proportional to 10,727.60, 16,102.20 and 5,185.40

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Solution

The fourth proportional to 10,727.60, 16,102.20 and 5,185.40 is: 7,783.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,727.60 : 16,102.20 = 5,185.40 : x
  2. Step 2: Convert to fraction form
    10,727.60/16,102.20 = 5,185.40/x
  3. Step 3: Cross multiply
    10,727.60x = 16,102.20 × 5,185.40
  4. Step 4: Simplify right side
    10,727.60x = 83,496,347.88
  5. Step 5: Solve for x
    x = 83,496,347.88/10,727.60
  6. Step 6: Final answer
    x = 7,783.32

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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.