Home / 28,083.74-38,730.22-18,516.84

Finding the Fourth Proportional to 28,083.74, 38,730.22 and 18,516.84

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Solution

The fourth proportional to 28,083.74, 38,730.22 and 18,516.84 is: 25,536.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,083.74 : 38,730.22 = 18,516.84 : x
  2. Step 2: Convert to fraction form
    28,083.74/38,730.22 = 18,516.84/x
  3. Step 3: Cross multiply
    28,083.74x = 38,730.22 × 18,516.84
  4. Step 4: Simplify right side
    28,083.74x = 717,161,286.90
  5. Step 5: Solve for x
    x = 717,161,286.90/28,083.74
  6. Step 6: Final answer
    x = 25,536.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.