Home / 12,392.20-17,096.53-8,145.55

Finding the Fourth Proportional to 12,392.20, 17,096.53 and 8,145.55

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Solution

The fourth proportional to 12,392.20, 17,096.53 and 8,145.55 is: 11,237.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,392.20 : 17,096.53 = 8,145.55 : x
  2. Step 2: Convert to fraction form
    12,392.20/17,096.53 = 8,145.55/x
  3. Step 3: Cross multiply
    12,392.20x = 17,096.53 × 8,145.55
  4. Step 4: Simplify right side
    12,392.20x = 139,260,643.63
  5. Step 5: Solve for x
    x = 139,260,643.63/12,392.20
  6. Step 6: Final answer
    x = 11,237.76

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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.