Home / 12,176.72-18,265.88-4,278.27

Finding the Fourth Proportional to 12,176.72, 18,265.88 and 4,278.27

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Solution

The fourth proportional to 12,176.72, 18,265.88 and 4,278.27 is: 6,417.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,176.72 : 18,265.88 = 4,278.27 : x
  2. Step 2: Convert to fraction form
    12,176.72/18,265.88 = 4,278.27/x
  3. Step 3: Cross multiply
    12,176.72x = 18,265.88 × 4,278.27
  4. Step 4: Simplify right side
    12,176.72x = 78,146,366.43
  5. Step 5: Solve for x
    x = 78,146,366.43/12,176.72
  6. Step 6: Final answer
    x = 6,417.69

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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.