Home / 9,107.40-13,669.20-7,876.20

Finding the Fourth Proportional to 9,107.40, 13,669.20 and 7,876.20

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Solution

The fourth proportional to 9,107.40, 13,669.20 and 7,876.20 is: 11,821.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,107.40 : 13,669.20 = 7,876.20 : x
  2. Step 2: Convert to fraction form
    9,107.40/13,669.20 = 7,876.20/x
  3. Step 3: Cross multiply
    9,107.40x = 13,669.20 × 7,876.20
  4. Step 4: Simplify right side
    9,107.40x = 107,661,353.04
  5. Step 5: Solve for x
    x = 107,661,353.04/9,107.40
  6. Step 6: Final answer
    x = 11,821.30

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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.