Home / 13,680.31-18,883.53-8,016.88

Finding the Fourth Proportional to 13,680.31, 18,883.53 and 8,016.88

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Solution

The fourth proportional to 13,680.31, 18,883.53 and 8,016.88 is: 11,066.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,680.31 : 18,883.53 = 8,016.88 : x
  2. Step 2: Convert to fraction form
    13,680.31/18,883.53 = 8,016.88/x
  3. Step 3: Cross multiply
    13,680.31x = 18,883.53 × 8,016.88
  4. Step 4: Simplify right side
    13,680.31x = 151,386,993.99
  5. Step 5: Solve for x
    x = 151,386,993.99/13,680.31
  6. Step 6: Final answer
    x = 11,066.05

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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.