Home / 15,228.48-21,010.56-8,513.16

Finding the Fourth Proportional to 15,228.48, 21,010.56 and 8,513.16

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Solution

The fourth proportional to 15,228.48, 21,010.56 and 8,513.16 is: 11,745.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,228.48 : 21,010.56 = 8,513.16 : x
  2. Step 2: Convert to fraction form
    15,228.48/21,010.56 = 8,513.16/x
  3. Step 3: Cross multiply
    15,228.48x = 21,010.56 × 8,513.16
  4. Step 4: Simplify right side
    15,228.48x = 178,866,258.97
  5. Step 5: Solve for x
    x = 178,866,258.97/15,228.48
  6. Step 6: Final answer
    x = 11,745.51

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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.