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Finding the Fourth Proportional to 13,998.62, 20,987.51 and 6,598.87

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Solution

The fourth proportional to 13,998.62, 20,987.51 and 6,598.87 is: 9,893.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.62 : 20,987.51 = 6,598.87 : x
  2. Step 2: Convert to fraction form
    13,998.62/20,987.51 = 6,598.87/x
  3. Step 3: Cross multiply
    13,998.62x = 20,987.51 × 6,598.87
  4. Step 4: Simplify right side
    13,998.62x = 138,493,764.65
  5. Step 5: Solve for x
    x = 138,493,764.65/13,998.62
  6. Step 6: Final answer
    x = 9,893.39

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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.