Home / 21,153.21-31,723.34-5,568.81

Finding the Fourth Proportional to 21,153.21, 31,723.34 and 5,568.81

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Solution

The fourth proportional to 21,153.21, 31,723.34 and 5,568.81 is: 8,351.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,153.21 : 31,723.34 = 5,568.81 : x
  2. Step 2: Convert to fraction form
    21,153.21/31,723.34 = 5,568.81/x
  3. Step 3: Cross multiply
    21,153.21x = 31,723.34 × 5,568.81
  4. Step 4: Simplify right side
    21,153.21x = 176,661,225.18
  5. Step 5: Solve for x
    x = 176,661,225.18/21,153.21
  6. Step 6: Final answer
    x = 8,351.51

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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.