Home / 12,281.88-18,423.45-3,516.56

Finding the Fourth Proportional to 12,281.88, 18,423.45 and 3,516.56

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Solution

The fourth proportional to 12,281.88, 18,423.45 and 3,516.56 is: 5,275.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,281.88 : 18,423.45 = 3,516.56 : x
  2. Step 2: Convert to fraction form
    12,281.88/18,423.45 = 3,516.56/x
  3. Step 3: Cross multiply
    12,281.88x = 18,423.45 × 3,516.56
  4. Step 4: Simplify right side
    12,281.88x = 64,787,247.93
  5. Step 5: Solve for x
    x = 64,787,247.93/12,281.88
  6. Step 6: Final answer
    x = 5,275.03

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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.