Home / 20,585.27-28,408.47-12,516.62

Finding the Fourth Proportional to 20,585.27, 28,408.47 and 12,516.62

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Solution

The fourth proportional to 20,585.27, 28,408.47 and 12,516.62 is: 17,273.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,585.27 : 28,408.47 = 12,516.62 : x
  2. Step 2: Convert to fraction form
    20,585.27/28,408.47 = 12,516.62/x
  3. Step 3: Cross multiply
    20,585.27x = 28,408.47 × 12,516.62
  4. Step 4: Simplify right side
    20,585.27x = 355,577,881.73
  5. Step 5: Solve for x
    x = 355,577,881.73/20,585.27
  6. Step 6: Final answer
    x = 17,273.42

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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.