Home / 13,475.20-18,590.32-8,168.08

Finding the Fourth Proportional to 13,475.20, 18,590.32 and 8,168.08

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Solution

The fourth proportional to 13,475.20, 18,590.32 and 8,168.08 is: 11,268.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,475.20 : 18,590.32 = 8,168.08 : x
  2. Step 2: Convert to fraction form
    13,475.20/18,590.32 = 8,168.08/x
  3. Step 3: Cross multiply
    13,475.20x = 18,590.32 × 8,168.08
  4. Step 4: Simplify right side
    13,475.20x = 151,847,220.99
  5. Step 5: Solve for x
    x = 151,847,220.99/13,475.20
  6. Step 6: Final answer
    x = 11,268.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.