Home / 13,730.38-20,579.66-6,319.28

Finding the Fourth Proportional to 13,730.38, 20,579.66 and 6,319.28

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Solution

The fourth proportional to 13,730.38, 20,579.66 and 6,319.28 is: 9,471.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.38 : 20,579.66 = 6,319.28 : x
  2. Step 2: Convert to fraction form
    13,730.38/20,579.66 = 6,319.28/x
  3. Step 3: Cross multiply
    13,730.38x = 20,579.66 × 6,319.28
  4. Step 4: Simplify right side
    13,730.38x = 130,048,633.84
  5. Step 5: Solve for x
    x = 130,048,633.84/13,730.38
  6. Step 6: Final answer
    x = 9,471.60

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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.