Home / 11,520.90-17,260.35-8,003.46

Finding the Fourth Proportional to 11,520.90, 17,260.35 and 8,003.46

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Solution

The fourth proportional to 11,520.90, 17,260.35 and 8,003.46 is: 11,990.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,520.90 : 17,260.35 = 8,003.46 : x
  2. Step 2: Convert to fraction form
    11,520.90/17,260.35 = 8,003.46/x
  3. Step 3: Cross multiply
    11,520.90x = 17,260.35 × 8,003.46
  4. Step 4: Simplify right side
    11,520.90x = 138,142,520.81
  5. Step 5: Solve for x
    x = 138,142,520.81/11,520.90
  6. Step 6: Final answer
    x = 11,990.60

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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.