Home / 20,483.62-30,725.66-8,639.39

Finding the Fourth Proportional to 20,483.62, 30,725.66 and 8,639.39

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Solution

The fourth proportional to 20,483.62, 30,725.66 and 8,639.39 is: 12,959.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,483.62 : 30,725.66 = 8,639.39 : x
  2. Step 2: Convert to fraction form
    20,483.62/30,725.66 = 8,639.39/x
  3. Step 3: Cross multiply
    20,483.62x = 30,725.66 × 8,639.39
  4. Step 4: Simplify right side
    20,483.62x = 265,451,058.16
  5. Step 5: Solve for x
    x = 265,451,058.16/20,483.62
  6. Step 6: Final answer
    x = 12,959.19

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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.