Home / 20,611.60-28,467.62-13,569.44

Finding the Fourth Proportional to 20,611.60, 28,467.62 and 13,569.44

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Solution

The fourth proportional to 20,611.60, 28,467.62 and 13,569.44 is: 18,741.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,611.60 : 28,467.62 = 13,569.44 : x
  2. Step 2: Convert to fraction form
    20,611.60/28,467.62 = 13,569.44/x
  3. Step 3: Cross multiply
    20,611.60x = 28,467.62 × 13,569.44
  4. Step 4: Simplify right side
    20,611.60x = 386,289,661.53
  5. Step 5: Solve for x
    x = 386,289,661.53/20,611.60
  6. Step 6: Final answer
    x = 18,741.37

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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.