Home / 15,227.56-21,012.48-8,512.60

Finding the Fourth Proportional to 15,227.56, 21,012.48 and 8,512.60

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Solution

The fourth proportional to 15,227.56, 21,012.48 and 8,512.60 is: 11,746.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,227.56 : 21,012.48 = 8,512.60 : x
  2. Step 2: Convert to fraction form
    15,227.56/21,012.48 = 8,512.60/x
  3. Step 3: Cross multiply
    15,227.56x = 21,012.48 × 8,512.60
  4. Step 4: Simplify right side
    15,227.56x = 178,870,837.25
  5. Step 5: Solve for x
    x = 178,870,837.25/15,227.56
  6. Step 6: Final answer
    x = 11,746.52

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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.