Home / 21,103.04-31,632.24-7,949.72

Finding the Fourth Proportional to 21,103.04, 31,632.24 and 7,949.72

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Solution

The fourth proportional to 21,103.04, 31,632.24 and 7,949.72 is: 11,916.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,103.04 : 31,632.24 = 7,949.72 : x
  2. Step 2: Convert to fraction form
    21,103.04/31,632.24 = 7,949.72/x
  3. Step 3: Cross multiply
    21,103.04x = 31,632.24 × 7,949.72
  4. Step 4: Simplify right side
    21,103.04x = 251,467,450.97
  5. Step 5: Solve for x
    x = 251,467,450.97/21,103.04
  6. Step 6: Final answer
    x = 11,916.17

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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.