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Finding the Fourth Proportional to 13,560.88, 20,326.44 and 6,987.44

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Solution

The fourth proportional to 13,560.88, 20,326.44 and 6,987.44 is: 10,473.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,560.88 : 20,326.44 = 6,987.44 : x
  2. Step 2: Convert to fraction form
    13,560.88/20,326.44 = 6,987.44/x
  3. Step 3: Cross multiply
    13,560.88x = 20,326.44 × 6,987.44
  4. Step 4: Simplify right side
    13,560.88x = 142,029,779.91
  5. Step 5: Solve for x
    x = 142,029,779.91/13,560.88
  6. Step 6: Final answer
    x = 10,473.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.