Home / 11,987.60-16,542.29-6,681.42

Finding the Fourth Proportional to 11,987.60, 16,542.29 and 6,681.42

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Solution

The fourth proportional to 11,987.60, 16,542.29 and 6,681.42 is: 9,220.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.60 : 16,542.29 = 6,681.42 : x
  2. Step 2: Convert to fraction form
    11,987.60/16,542.29 = 6,681.42/x
  3. Step 3: Cross multiply
    11,987.60x = 16,542.29 × 6,681.42
  4. Step 4: Simplify right side
    11,987.60x = 110,526,003.96
  5. Step 5: Solve for x
    x = 110,526,003.96/11,987.60
  6. Step 6: Final answer
    x = 9,220.03

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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.