Home / 14,121.30-21,177.61-4,758.81

Finding the Fourth Proportional to 14,121.30, 21,177.61 and 4,758.81

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Solution

The fourth proportional to 14,121.30, 21,177.61 and 4,758.81 is: 7,136.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,121.30 : 21,177.61 = 4,758.81 : x
  2. Step 2: Convert to fraction form
    14,121.30/21,177.61 = 4,758.81/x
  3. Step 3: Cross multiply
    14,121.30x = 21,177.61 × 4,758.81
  4. Step 4: Simplify right side
    14,121.30x = 100,780,222.24
  5. Step 5: Solve for x
    x = 100,780,222.24/14,121.30
  6. Step 6: Final answer
    x = 7,136.75

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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.