Home / 13,576.60-20,358.12-8,656.12

Finding the Fourth Proportional to 13,576.60, 20,358.12 and 8,656.12

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Solution

The fourth proportional to 13,576.60, 20,358.12 and 8,656.12 is: 12,979.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,576.60 : 20,358.12 = 8,656.12 : x
  2. Step 2: Convert to fraction form
    13,576.60/20,358.12 = 8,656.12/x
  3. Step 3: Cross multiply
    13,576.60x = 20,358.12 × 8,656.12
  4. Step 4: Simplify right side
    13,576.60x = 176,222,329.69
  5. Step 5: Solve for x
    x = 176,222,329.69/13,576.60
  6. Step 6: Final answer
    x = 12,979.86

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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.