Home / 13,101.22-18,079.53-8,631.46

Finding the Fourth Proportional to 13,101.22, 18,079.53 and 8,631.46

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Solution

The fourth proportional to 13,101.22, 18,079.53 and 8,631.46 is: 11,911.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,101.22 : 18,079.53 = 8,631.46 : x
  2. Step 2: Convert to fraction form
    13,101.22/18,079.53 = 8,631.46/x
  3. Step 3: Cross multiply
    13,101.22x = 18,079.53 × 8,631.46
  4. Step 4: Simplify right side
    13,101.22x = 156,052,740.01
  5. Step 5: Solve for x
    x = 156,052,740.01/13,101.22
  6. Step 6: Final answer
    x = 11,911.31

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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.