Home / 13,197.44-18,207.24-7,890.32

Finding the Fourth Proportional to 13,197.44, 18,207.24 and 7,890.32

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Solution

The fourth proportional to 13,197.44, 18,207.24 and 7,890.32 is: 10,885.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,197.44 : 18,207.24 = 7,890.32 : x
  2. Step 2: Convert to fraction form
    13,197.44/18,207.24 = 7,890.32/x
  3. Step 3: Cross multiply
    13,197.44x = 18,207.24 × 7,890.32
  4. Step 4: Simplify right side
    13,197.44x = 143,660,949.92
  5. Step 5: Solve for x
    x = 143,660,949.92/13,197.44
  6. Step 6: Final answer
    x = 10,885.52

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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.