Home / 12,102.45-18,063.38-11,807.16

Finding the Fourth Proportional to 12,102.45, 18,063.38 and 11,807.16

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Solution

The fourth proportional to 12,102.45, 18,063.38 and 11,807.16 is: 17,622.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,102.45 : 18,063.38 = 11,807.16 : x
  2. Step 2: Convert to fraction form
    12,102.45/18,063.38 = 11,807.16/x
  3. Step 3: Cross multiply
    12,102.45x = 18,063.38 × 11,807.16
  4. Step 4: Simplify right side
    12,102.45x = 213,277,217.80
  5. Step 5: Solve for x
    x = 213,277,217.80/12,102.45
  6. Step 6: Final answer
    x = 17,622.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.