Home / 11,005.92-15,172.98-10,661.28

Finding the Fourth Proportional to 11,005.92, 15,172.98 and 10,661.28

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Solution

The fourth proportional to 11,005.92, 15,172.98 and 10,661.28 is: 14,697.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,005.92 : 15,172.98 = 10,661.28 : x
  2. Step 2: Convert to fraction form
    11,005.92/15,172.98 = 10,661.28/x
  3. Step 3: Cross multiply
    11,005.92x = 15,172.98 × 10,661.28
  4. Step 4: Simplify right side
    11,005.92x = 161,763,388.21
  5. Step 5: Solve for x
    x = 161,763,388.21/11,005.92
  6. Step 6: Final answer
    x = 14,697.85

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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.