Home / 18,742.63-28,115.56-4,891.63

Finding the Fourth Proportional to 18,742.63, 28,115.56 and 4,891.63

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Solution

The fourth proportional to 18,742.63, 28,115.56 and 4,891.63 is: 7,337.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,742.63 : 28,115.56 = 4,891.63 : x
  2. Step 2: Convert to fraction form
    18,742.63/28,115.56 = 4,891.63/x
  3. Step 3: Cross multiply
    18,742.63x = 28,115.56 × 4,891.63
  4. Step 4: Simplify right side
    18,742.63x = 137,530,776.19
  5. Step 5: Solve for x
    x = 137,530,776.19/18,742.63
  6. Step 6: Final answer
    x = 7,337.86

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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.