Home / 21,224.91-31,850.13-7,907.70

Finding the Fourth Proportional to 21,224.91, 31,850.13 and 7,907.70

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Solution

The fourth proportional to 21,224.91, 31,850.13 and 7,907.70 is: 11,866.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,224.91 : 31,850.13 = 7,907.70 : x
  2. Step 2: Convert to fraction form
    21,224.91/31,850.13 = 7,907.70/x
  3. Step 3: Cross multiply
    21,224.91x = 31,850.13 × 7,907.70
  4. Step 4: Simplify right side
    21,224.91x = 251,861,233.46
  5. Step 5: Solve for x
    x = 251,861,233.46/21,224.91
  6. Step 6: Final answer
    x = 11,866.30

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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.