Home / 15,212.34-20,990.62-8,497.64

Finding the Fourth Proportional to 15,212.34, 20,990.62 and 8,497.64

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Solution

The fourth proportional to 15,212.34, 20,990.62 and 8,497.64 is: 11,725.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,212.34 : 20,990.62 = 8,497.64 : x
  2. Step 2: Convert to fraction form
    15,212.34/20,990.62 = 8,497.64/x
  3. Step 3: Cross multiply
    15,212.34x = 20,990.62 × 8,497.64
  4. Step 4: Simplify right side
    15,212.34x = 178,370,732.14
  5. Step 5: Solve for x
    x = 178,370,732.14/15,212.34
  6. Step 6: Final answer
    x = 11,725.40

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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.