Home / 20,516.78-30,774.24-5,725.40

Finding the Fourth Proportional to 20,516.78, 30,774.24 and 5,725.40

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Solution

The fourth proportional to 20,516.78, 30,774.24 and 5,725.40 is: 8,587.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,516.78 : 30,774.24 = 5,725.40 : x
  2. Step 2: Convert to fraction form
    20,516.78/30,774.24 = 5,725.40/x
  3. Step 3: Cross multiply
    20,516.78x = 30,774.24 × 5,725.40
  4. Step 4: Simplify right side
    20,516.78x = 176,194,833.70
  5. Step 5: Solve for x
    x = 176,194,833.70/20,516.78
  6. Step 6: Final answer
    x = 8,587.84

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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.