Home / 13,207.08-18,225.78-7,238.64

Finding the Fourth Proportional to 13,207.08, 18,225.78 and 7,238.64

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Solution

The fourth proportional to 13,207.08, 18,225.78 and 7,238.64 is: 9,989.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207.08 : 18,225.78 = 7,238.64 : x
  2. Step 2: Convert to fraction form
    13,207.08/18,225.78 = 7,238.64/x
  3. Step 3: Cross multiply
    13,207.08x = 18,225.78 × 7,238.64
  4. Step 4: Simplify right side
    13,207.08x = 131,929,860.14
  5. Step 5: Solve for x
    x = 131,929,860.14/13,207.08
  6. Step 6: Final answer
    x = 9,989.33

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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.