Home / 15,311.24-21,131.82-9,346.36

Finding the Fourth Proportional to 15,311.24, 21,131.82 and 9,346.36

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Solution

The fourth proportional to 15,311.24, 21,131.82 and 9,346.36 is: 12,899.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,311.24 : 21,131.82 = 9,346.36 : x
  2. Step 2: Convert to fraction form
    15,311.24/21,131.82 = 9,346.36/x
  3. Step 3: Cross multiply
    15,311.24x = 21,131.82 × 9,346.36
  4. Step 4: Simplify right side
    15,311.24x = 197,505,597.18
  5. Step 5: Solve for x
    x = 197,505,597.18/15,311.24
  6. Step 6: Final answer
    x = 12,899.39

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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.