Home / 13,771.20-18,998.40-8,464.32

Finding the Fourth Proportional to 13,771.20, 18,998.40 and 8,464.32

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Solution

The fourth proportional to 13,771.20, 18,998.40 and 8,464.32 is: 11,677.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,771.20 : 18,998.40 = 8,464.32 : x
  2. Step 2: Convert to fraction form
    13,771.20/18,998.40 = 8,464.32/x
  3. Step 3: Cross multiply
    13,771.20x = 18,998.40 × 8,464.32
  4. Step 4: Simplify right side
    13,771.20x = 160,808,537.09
  5. Step 5: Solve for x
    x = 160,808,537.09/13,771.20
  6. Step 6: Final answer
    x = 11,677.16

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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.