Home / 11,790.12-16,278.12-7,320.54

Finding the Fourth Proportional to 11,790.12, 16,278.12 and 7,320.54

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Solution

The fourth proportional to 11,790.12, 16,278.12 and 7,320.54 is: 10,107.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,790.12 : 16,278.12 = 7,320.54 : x
  2. Step 2: Convert to fraction form
    11,790.12/16,278.12 = 7,320.54/x
  3. Step 3: Cross multiply
    11,790.12x = 16,278.12 × 7,320.54
  4. Step 4: Simplify right side
    11,790.12x = 119,164,628.58
  5. Step 5: Solve for x
    x = 119,164,628.58/11,790.12
  6. Step 6: Final answer
    x = 10,107.16

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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.