Home / 11,808.96-16,291.20-7,090.50

Finding the Fourth Proportional to 11,808.96, 16,291.20 and 7,090.50

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Solution

The fourth proportional to 11,808.96, 16,291.20 and 7,090.50 is: 9,781.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,808.96 : 16,291.20 = 7,090.50 : x
  2. Step 2: Convert to fraction form
    11,808.96/16,291.20 = 7,090.50/x
  3. Step 3: Cross multiply
    11,808.96x = 16,291.20 × 7,090.50
  4. Step 4: Simplify right side
    11,808.96x = 115,512,753.60
  5. Step 5: Solve for x
    x = 115,512,753.60/11,808.96
  6. Step 6: Final answer
    x = 9,781.79

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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.