Home / 11,163.48-15,405.79-6,128.17

Finding the Fourth Proportional to 11,163.48, 15,405.79 and 6,128.17

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Solution

The fourth proportional to 11,163.48, 15,405.79 and 6,128.17 is: 8,456.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,163.48 : 15,405.79 = 6,128.17 : x
  2. Step 2: Convert to fraction form
    11,163.48/15,405.79 = 6,128.17/x
  3. Step 3: Cross multiply
    11,163.48x = 15,405.79 × 6,128.17
  4. Step 4: Simplify right side
    11,163.48x = 94,409,300.10
  5. Step 5: Solve for x
    x = 94,409,300.10/11,163.48
  6. Step 6: Final answer
    x = 8,456.98

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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.