Home / 12,122.46-18,189.36-6,275.88

Finding the Fourth Proportional to 12,122.46, 18,189.36 and 6,275.88

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Solution

The fourth proportional to 12,122.46, 18,189.36 and 6,275.88 is: 9,416.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,122.46 : 18,189.36 = 6,275.88 : x
  2. Step 2: Convert to fraction form
    12,122.46/18,189.36 = 6,275.88/x
  3. Step 3: Cross multiply
    12,122.46x = 18,189.36 × 6,275.88
  4. Step 4: Simplify right side
    12,122.46x = 114,154,240.64
  5. Step 5: Solve for x
    x = 114,154,240.64/12,122.46
  6. Step 6: Final answer
    x = 9,416.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.