Home / 13,380.63-18,464.91-7,412.22

Finding the Fourth Proportional to 13,380.63, 18,464.91 and 7,412.22

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Solution

The fourth proportional to 13,380.63, 18,464.91 and 7,412.22 is: 10,228.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,380.63 : 18,464.91 = 7,412.22 : x
  2. Step 2: Convert to fraction form
    13,380.63/18,464.91 = 7,412.22/x
  3. Step 3: Cross multiply
    13,380.63x = 18,464.91 × 7,412.22
  4. Step 4: Simplify right side
    13,380.63x = 136,865,975.20
  5. Step 5: Solve for x
    x = 136,865,975.20/13,380.63
  6. Step 6: Final answer
    x = 10,228.66

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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.