Home / 13,207.20-18,225.91-7,238.87

Finding the Fourth Proportional to 13,207.20, 18,225.91 and 7,238.87

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Solution

The fourth proportional to 13,207.20, 18,225.91 and 7,238.87 is: 9,989.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207.20 : 18,225.91 = 7,238.87 : x
  2. Step 2: Convert to fraction form
    13,207.20/18,225.91 = 7,238.87/x
  3. Step 3: Cross multiply
    13,207.20x = 18,225.91 × 7,238.87
  4. Step 4: Simplify right side
    13,207.20x = 131,934,993.12
  5. Step 5: Solve for x
    x = 131,934,993.12/13,207.20
  6. Step 6: Final answer
    x = 9,989.63

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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.