Home / 15,211.46-20,991.58-8,497.18

Finding the Fourth Proportional to 15,211.46, 20,991.58 and 8,497.18

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Solution

The fourth proportional to 15,211.46, 20,991.58 and 8,497.18 is: 11,725.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,211.46 : 20,991.58 = 8,497.18 : x
  2. Step 2: Convert to fraction form
    15,211.46/20,991.58 = 8,497.18/x
  3. Step 3: Cross multiply
    15,211.46x = 20,991.58 × 8,497.18
  4. Step 4: Simplify right side
    15,211.46x = 178,369,233.74
  5. Step 5: Solve for x
    x = 178,369,233.74/15,211.46
  6. Step 6: Final answer
    x = 11,725.98

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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.