Home / 15,950.30-21,988.60-11,219.90

Finding the Fourth Proportional to 15,950.30, 21,988.60 and 11,219.90

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Solution

The fourth proportional to 15,950.30, 21,988.60 and 11,219.90 is: 15,467.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,950.30 : 21,988.60 = 11,219.90 : x
  2. Step 2: Convert to fraction form
    15,950.30/21,988.60 = 11,219.90/x
  3. Step 3: Cross multiply
    15,950.30x = 21,988.60 × 11,219.90
  4. Step 4: Simplify right side
    15,950.30x = 246,709,755.15
  5. Step 5: Solve for x
    x = 246,709,755.15/15,950.30
  6. Step 6: Final answer
    x = 15,467.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.