Home / 11,987.90-16,543.59-6,682.58

Finding the Fourth Proportional to 11,987.90, 16,543.59 and 6,682.58

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Solution

The fourth proportional to 11,987.90, 16,543.59 and 6,682.58 is: 9,222.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.90 : 16,543.59 = 6,682.58 : x
  2. Step 2: Convert to fraction form
    11,987.90/16,543.59 = 6,682.58/x
  3. Step 3: Cross multiply
    11,987.90x = 16,543.59 × 6,682.58
  4. Step 4: Simplify right side
    11,987.90x = 110,553,863.66
  5. Step 5: Solve for x
    x = 110,553,863.66/11,987.90
  6. Step 6: Final answer
    x = 9,222.12

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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.