Home / 12,391.04-18,546.12-9,103.28

Finding the Fourth Proportional to 12,391.04, 18,546.12 and 9,103.28

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Solution

The fourth proportional to 12,391.04, 18,546.12 and 9,103.28 is: 13,625.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.04 : 18,546.12 = 9,103.28 : x
  2. Step 2: Convert to fraction form
    12,391.04/18,546.12 = 9,103.28/x
  3. Step 3: Cross multiply
    12,391.04x = 18,546.12 × 9,103.28
  4. Step 4: Simplify right side
    12,391.04x = 168,830,523.27
  5. Step 5: Solve for x
    x = 168,830,523.27/12,391.04
  6. Step 6: Final answer
    x = 13,625.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.