Home / 13,481.28-18,603.99-7,513.61

Finding the Fourth Proportional to 13,481.28, 18,603.99 and 7,513.61

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Solution

The fourth proportional to 13,481.28, 18,603.99 and 7,513.61 is: 10,368.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,481.28 : 18,603.99 = 7,513.61 : x
  2. Step 2: Convert to fraction form
    13,481.28/18,603.99 = 7,513.61/x
  3. Step 3: Cross multiply
    13,481.28x = 18,603.99 × 7,513.61
  4. Step 4: Simplify right side
    13,481.28x = 139,783,032.28
  5. Step 5: Solve for x
    x = 139,783,032.28/13,481.28
  6. Step 6: Final answer
    x = 10,368.68

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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.