Home / 13,531.47-20,297.21-8,855.42

Finding the Fourth Proportional to 13,531.47, 20,297.21 and 8,855.42

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Solution

The fourth proportional to 13,531.47, 20,297.21 and 8,855.42 is: 13,283.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,531.47 : 20,297.21 = 8,855.42 : x
  2. Step 2: Convert to fraction form
    13,531.47/20,297.21 = 8,855.42/x
  3. Step 3: Cross multiply
    13,531.47x = 20,297.21 × 8,855.42
  4. Step 4: Simplify right side
    13,531.47x = 179,740,319.38
  5. Step 5: Solve for x
    x = 179,740,319.38/13,531.47
  6. Step 6: Final answer
    x = 13,283.13

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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.