Home / 15,591.99-21,517.43-8,518.26

Finding the Fourth Proportional to 15,591.99, 21,517.43 and 8,518.26

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Solution

The fourth proportional to 15,591.99, 21,517.43 and 8,518.26 is: 11,755.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,591.99 : 21,517.43 = 8,518.26 : x
  2. Step 2: Convert to fraction form
    15,591.99/21,517.43 = 8,518.26/x
  3. Step 3: Cross multiply
    15,591.99x = 21,517.43 × 8,518.26
  4. Step 4: Simplify right side
    15,591.99x = 183,291,063.27
  5. Step 5: Solve for x
    x = 183,291,063.27/15,591.99
  6. Step 6: Final answer
    x = 11,755.46

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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.