Home / 12,720.92-17,560.60-11,012.63

Finding the Fourth Proportional to 12,720.92, 17,560.60 and 11,012.63

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Solution

The fourth proportional to 12,720.92, 17,560.60 and 11,012.63 is: 15,202.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720.92 : 17,560.60 = 11,012.63 : x
  2. Step 2: Convert to fraction form
    12,720.92/17,560.60 = 11,012.63/x
  3. Step 3: Cross multiply
    12,720.92x = 17,560.60 × 11,012.63
  4. Step 4: Simplify right side
    12,720.92x = 193,388,275.04
  5. Step 5: Solve for x
    x = 193,388,275.04/12,720.92
  6. Step 6: Final answer
    x = 15,202.39

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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.