Home / 11,985.89-16,540.61-6,681.04

Finding the Fourth Proportional to 11,985.89, 16,540.61 and 6,681.04

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Solution

The fourth proportional to 11,985.89, 16,540.61 and 6,681.04 is: 9,219.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.89 : 16,540.61 = 6,681.04 : x
  2. Step 2: Convert to fraction form
    11,985.89/16,540.61 = 6,681.04/x
  3. Step 3: Cross multiply
    11,985.89x = 16,540.61 × 6,681.04
  4. Step 4: Simplify right side
    11,985.89x = 110,508,477.03
  5. Step 5: Solve for x
    x = 110,508,477.03/11,985.89
  6. Step 6: Final answer
    x = 9,219.88

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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.