Home / 13,507.20-20,240.64-8,317.44

Finding the Fourth Proportional to 13,507.20, 20,240.64 and 8,317.44

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Solution

The fourth proportional to 13,507.20, 20,240.64 and 8,317.44 is: 12,463.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,507.20 : 20,240.64 = 8,317.44 : x
  2. Step 2: Convert to fraction form
    13,507.20/20,240.64 = 8,317.44/x
  3. Step 3: Cross multiply
    13,507.20x = 20,240.64 × 8,317.44
  4. Step 4: Simplify right side
    13,507.20x = 168,350,308.76
  5. Step 5: Solve for x
    x = 168,350,308.76/13,507.20
  6. Step 6: Final answer
    x = 12,463.75

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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.