Home / 12,282.27-18,423.51-7,615.86

Finding the Fourth Proportional to 12,282.27, 18,423.51 and 7,615.86

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Solution

The fourth proportional to 12,282.27, 18,423.51 and 7,615.86 is: 11,423.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,282.27 : 18,423.51 = 7,615.86 : x
  2. Step 2: Convert to fraction form
    12,282.27/18,423.51 = 7,615.86/x
  3. Step 3: Cross multiply
    12,282.27x = 18,423.51 × 7,615.86
  4. Step 4: Simplify right side
    12,282.27x = 140,310,872.87
  5. Step 5: Solve for x
    x = 140,310,872.87/12,282.27
  6. Step 6: Final answer
    x = 11,423.86

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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.