Home / 13,380.77-18,464.65-7,412.09

Finding the Fourth Proportional to 13,380.77, 18,464.65 and 7,412.09

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Solution

The fourth proportional to 13,380.77, 18,464.65 and 7,412.09 is: 10,228.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,380.77 : 18,464.65 = 7,412.09 : x
  2. Step 2: Convert to fraction form
    13,380.77/18,464.65 = 7,412.09/x
  3. Step 3: Cross multiply
    13,380.77x = 18,464.65 × 7,412.09
  4. Step 4: Simplify right side
    13,380.77x = 136,861,647.62
  5. Step 5: Solve for x
    x = 136,861,647.62/13,380.77
  6. Step 6: Final answer
    x = 10,228.23

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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.