Home / 11,720.95-16,175.07-6,415.66

Finding the Fourth Proportional to 11,720.95, 16,175.07 and 6,415.66

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Solution

The fourth proportional to 11,720.95, 16,175.07 and 6,415.66 is: 8,853.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,720.95 : 16,175.07 = 6,415.66 : x
  2. Step 2: Convert to fraction form
    11,720.95/16,175.07 = 6,415.66/x
  3. Step 3: Cross multiply
    11,720.95x = 16,175.07 × 6,415.66
  4. Step 4: Simplify right side
    11,720.95x = 103,773,660.79
  5. Step 5: Solve for x
    x = 103,773,660.79/11,720.95
  6. Step 6: Final answer
    x = 8,853.69

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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.