Home / 11,981.76-17,983.35-11,937.11

Finding the Fourth Proportional to 11,981.76, 17,983.35 and 11,937.11

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Solution

The fourth proportional to 11,981.76, 17,983.35 and 11,937.11 is: 17,916.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,981.76 : 17,983.35 = 11,937.11 : x
  2. Step 2: Convert to fraction form
    11,981.76/17,983.35 = 11,937.11/x
  3. Step 3: Cross multiply
    11,981.76x = 17,983.35 × 11,937.11
  4. Step 4: Simplify right side
    11,981.76x = 214,669,137.20
  5. Step 5: Solve for x
    x = 214,669,137.20/11,981.76
  6. Step 6: Final answer
    x = 17,916.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.