Home / 11,187.40-16,781.10-6,802.60

Finding the Fourth Proportional to 11,187.40, 16,781.10 and 6,802.60

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Solution

The fourth proportional to 11,187.40, 16,781.10 and 6,802.60 is: 10,203.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.40 : 16,781.10 = 6,802.60 : x
  2. Step 2: Convert to fraction form
    11,187.40/16,781.10 = 6,802.60/x
  3. Step 3: Cross multiply
    11,187.40x = 16,781.10 × 6,802.60
  4. Step 4: Simplify right side
    11,187.40x = 114,155,110.86
  5. Step 5: Solve for x
    x = 114,155,110.86/11,187.40
  6. Step 6: Final answer
    x = 10,203.90

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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.