Home / 13,012.20-19,531.26-7,171.56

Finding the Fourth Proportional to 13,012.20, 19,531.26 and 7,171.56

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Solution

The fourth proportional to 13,012.20, 19,531.26 and 7,171.56 is: 10,764.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,012.20 : 19,531.26 = 7,171.56 : x
  2. Step 2: Convert to fraction form
    13,012.20/19,531.26 = 7,171.56/x
  3. Step 3: Cross multiply
    13,012.20x = 19,531.26 × 7,171.56
  4. Step 4: Simplify right side
    13,012.20x = 140,069,602.97
  5. Step 5: Solve for x
    x = 140,069,602.97/13,012.20
  6. Step 6: Final answer
    x = 10,764.48

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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.