Home / 14,151.30-21,222.90-4,288.20

Finding the Fourth Proportional to 14,151.30, 21,222.90 and 4,288.20

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Solution

The fourth proportional to 14,151.30, 21,222.90 and 4,288.20 is: 6,431.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,151.30 : 21,222.90 = 4,288.20 : x
  2. Step 2: Convert to fraction form
    14,151.30/21,222.90 = 4,288.20/x
  3. Step 3: Cross multiply
    14,151.30x = 21,222.90 × 4,288.20
  4. Step 4: Simplify right side
    14,151.30x = 91,008,039.78
  5. Step 5: Solve for x
    x = 91,008,039.78/14,151.30
  6. Step 6: Final answer
    x = 6,431.07

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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.