Home / 11,155.87-15,395.30-6,120.35

Finding the Fourth Proportional to 11,155.87, 15,395.30 and 6,120.35

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Solution

The fourth proportional to 11,155.87, 15,395.30 and 6,120.35 is: 8,446.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,155.87 : 15,395.30 = 6,120.35 : x
  2. Step 2: Convert to fraction form
    11,155.87/15,395.30 = 6,120.35/x
  3. Step 3: Cross multiply
    11,155.87x = 15,395.30 × 6,120.35
  4. Step 4: Simplify right side
    11,155.87x = 94,224,562.68
  5. Step 5: Solve for x
    x = 94,224,562.68/11,155.87
  6. Step 6: Final answer
    x = 8,446.19

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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.