Home / 13,349.25-18,421.25-7,380.57

Finding the Fourth Proportional to 13,349.25, 18,421.25 and 7,380.57

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Solution

The fourth proportional to 13,349.25, 18,421.25 and 7,380.57 is: 10,184.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,349.25 : 18,421.25 = 7,380.57 : x
  2. Step 2: Convert to fraction form
    13,349.25/18,421.25 = 7,380.57/x
  3. Step 3: Cross multiply
    13,349.25x = 18,421.25 × 7,380.57
  4. Step 4: Simplify right side
    13,349.25x = 135,959,288.21
  5. Step 5: Solve for x
    x = 135,959,288.21/13,349.25
  6. Step 6: Final answer
    x = 10,184.79

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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.