Home / 12,489.27-18,733.91-3,730.34

Finding the Fourth Proportional to 12,489.27, 18,733.91 and 3,730.34

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Solution

The fourth proportional to 12,489.27, 18,733.91 and 3,730.34 is: 5,595.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,489.27 : 18,733.91 = 3,730.34 : x
  2. Step 2: Convert to fraction form
    12,489.27/18,733.91 = 3,730.34/x
  3. Step 3: Cross multiply
    12,489.27x = 18,733.91 × 3,730.34
  4. Step 4: Simplify right side
    12,489.27x = 69,883,741.51
  5. Step 5: Solve for x
    x = 69,883,741.51/12,489.27
  6. Step 6: Final answer
    x = 5,595.50

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Similar ratio
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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.