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Finding the Fourth Proportional to 12,494.72, 18,742.68 and 3,730.32

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Solution

The fourth proportional to 12,494.72, 18,742.68 and 3,730.32 is: 5,595.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,494.72 : 18,742.68 = 3,730.32 : x
  2. Step 2: Convert to fraction form
    12,494.72/18,742.68 = 3,730.32/x
  3. Step 3: Cross multiply
    12,494.72x = 18,742.68 × 3,730.32
  4. Step 4: Simplify right side
    12,494.72x = 69,916,194.06
  5. Step 5: Solve for x
    x = 69,916,194.06/12,494.72
  6. Step 6: Final answer
    x = 5,595.66

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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.