Home / 11,155.21-15,395.16-6,120.41

Finding the Fourth Proportional to 11,155.21, 15,395.16 and 6,120.41

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Solution

The fourth proportional to 11,155.21, 15,395.16 and 6,120.41 is: 8,446.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,155.21 : 15,395.16 = 6,120.41 : x
  2. Step 2: Convert to fraction form
    11,155.21/15,395.16 = 6,120.41/x
  3. Step 3: Cross multiply
    11,155.21x = 15,395.16 × 6,120.41
  4. Step 4: Simplify right side
    11,155.21x = 94,224,614.24
  5. Step 5: Solve for x
    x = 94,224,614.24/11,155.21
  6. Step 6: Final answer
    x = 8,446.69

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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.