Home / 11,985.90-16,540.83-6,680.58

Finding the Fourth Proportional to 11,985.90, 16,540.83 and 6,680.58

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Solution

The fourth proportional to 11,985.90, 16,540.83 and 6,680.58 is: 9,219.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.90 : 16,540.83 = 6,680.58 : x
  2. Step 2: Convert to fraction form
    11,985.90/16,540.83 = 6,680.58/x
  3. Step 3: Cross multiply
    11,985.90x = 16,540.83 × 6,680.58
  4. Step 4: Simplify right side
    11,985.90x = 110,502,338.08
  5. Step 5: Solve for x
    x = 110,502,338.08/11,985.90
  6. Step 6: Final answer
    x = 9,219.36

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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.