Home / 11,681.16-16,120.36-6,646.12

Finding the Fourth Proportional to 11,681.16, 16,120.36 and 6,646.12

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Solution

The fourth proportional to 11,681.16, 16,120.36 and 6,646.12 is: 9,171.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,681.16 : 16,120.36 = 6,646.12 : x
  2. Step 2: Convert to fraction form
    11,681.16/16,120.36 = 6,646.12/x
  3. Step 3: Cross multiply
    11,681.16x = 16,120.36 × 6,646.12
  4. Step 4: Simplify right side
    11,681.16x = 107,137,847.00
  5. Step 5: Solve for x
    x = 107,137,847.00/11,681.16
  6. Step 6: Final answer
    x = 9,171.85

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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.