Home / 15,591.42-21,516.69-8,518.29

Finding the Fourth Proportional to 15,591.42, 21,516.69 and 8,518.29

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Solution

The fourth proportional to 15,591.42, 21,516.69 and 8,518.29 is: 11,755.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,591.42 : 21,516.69 = 8,518.29 : x
  2. Step 2: Convert to fraction form
    15,591.42/21,516.69 = 8,518.29/x
  3. Step 3: Cross multiply
    15,591.42x = 21,516.69 × 8,518.29
  4. Step 4: Simplify right side
    15,591.42x = 183,285,405.26
  5. Step 5: Solve for x
    x = 183,285,405.26/15,591.42
  6. Step 6: Final answer
    x = 11,755.53

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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.