Home / 13,317.30-18,378.97-7,349.56

Finding the Fourth Proportional to 13,317.30, 18,378.97 and 7,349.56

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Solution

The fourth proportional to 13,317.30, 18,378.97 and 7,349.56 is: 10,142.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,317.30 : 18,378.97 = 7,349.56 : x
  2. Step 2: Convert to fraction form
    13,317.30/18,378.97 = 7,349.56/x
  3. Step 3: Cross multiply
    13,317.30x = 18,378.97 × 7,349.56
  4. Step 4: Simplify right side
    13,317.30x = 135,077,278.43
  5. Step 5: Solve for x
    x = 135,077,278.43/13,317.30
  6. Step 6: Final answer
    x = 10,142.99

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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.