Home / 18,967.45-28,429.96-7,109.81

Finding the Fourth Proportional to 18,967.45, 28,429.96 and 7,109.81

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Solution

The fourth proportional to 18,967.45, 28,429.96 and 7,109.81 is: 10,656.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,967.45 : 28,429.96 = 7,109.81 : x
  2. Step 2: Convert to fraction form
    18,967.45/28,429.96 = 7,109.81/x
  3. Step 3: Cross multiply
    18,967.45x = 28,429.96 × 7,109.81
  4. Step 4: Simplify right side
    18,967.45x = 202,131,613.91
  5. Step 5: Solve for x
    x = 202,131,613.91/18,967.45
  6. Step 6: Final answer
    x = 10,656.76

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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.