Home / 11,155.77-15,394.69-7,176.87

Finding the Fourth Proportional to 11,155.77, 15,394.69 and 7,176.87

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Solution

The fourth proportional to 11,155.77, 15,394.69 and 7,176.87 is: 9,903.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,155.77 : 15,394.69 = 7,176.87 : x
  2. Step 2: Convert to fraction form
    11,155.77/15,394.69 = 7,176.87/x
  3. Step 3: Cross multiply
    11,155.77x = 15,394.69 × 7,176.87
  4. Step 4: Simplify right side
    11,155.77x = 110,485,697.79
  5. Step 5: Solve for x
    x = 110,485,697.79/11,155.77
  6. Step 6: Final answer
    x = 9,903.91

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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.