Home / 11,621.88-16,038.66-6,316.68

Finding the Fourth Proportional to 11,621.88, 16,038.66 and 6,316.68

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Solution

The fourth proportional to 11,621.88, 16,038.66 and 6,316.68 is: 8,717.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,621.88 : 16,038.66 = 6,316.68 : x
  2. Step 2: Convert to fraction form
    11,621.88/16,038.66 = 6,316.68/x
  3. Step 3: Cross multiply
    11,621.88x = 16,038.66 × 6,316.68
  4. Step 4: Simplify right side
    11,621.88x = 101,311,131.15
  5. Step 5: Solve for x
    x = 101,311,131.15/11,621.88
  6. Step 6: Final answer
    x = 8,717.28

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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.