Home / 15,016.11-20,720.54-8,300.05

Finding the Fourth Proportional to 15,016.11, 20,720.54 and 8,300.05

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Solution

The fourth proportional to 15,016.11, 20,720.54 and 8,300.05 is: 11,453.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,016.11 : 20,720.54 = 8,300.05 : x
  2. Step 2: Convert to fraction form
    15,016.11/20,720.54 = 8,300.05/x
  3. Step 3: Cross multiply
    15,016.11x = 20,720.54 × 8,300.05
  4. Step 4: Simplify right side
    15,016.11x = 171,981,518.03
  5. Step 5: Solve for x
    x = 171,981,518.03/15,016.11
  6. Step 6: Final answer
    x = 11,453.13

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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.