Home / 21,321.01-31,981.48-5,738.63

Finding the Fourth Proportional to 21,321.01, 31,981.48 and 5,738.63

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Solution

The fourth proportional to 21,321.01, 31,981.48 and 5,738.63 is: 8,607.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,321.01 : 31,981.48 = 5,738.63 : x
  2. Step 2: Convert to fraction form
    21,321.01/31,981.48 = 5,738.63/x
  3. Step 3: Cross multiply
    21,321.01x = 31,981.48 × 5,738.63
  4. Step 4: Simplify right side
    21,321.01x = 183,529,880.57
  5. Step 5: Solve for x
    x = 183,529,880.57/21,321.01
  6. Step 6: Final answer
    x = 8,607.94

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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.