Home / 21,880.80-32,837.40-8,742.60

Finding the Fourth Proportional to 21,880.80, 32,837.40 and 8,742.60

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Solution

The fourth proportional to 21,880.80, 32,837.40 and 8,742.60 is: 13,120.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,880.80 : 32,837.40 = 8,742.60 : x
  2. Step 2: Convert to fraction form
    21,880.80/32,837.40 = 8,742.60/x
  3. Step 3: Cross multiply
    21,880.80x = 32,837.40 × 8,742.60
  4. Step 4: Simplify right side
    21,880.80x = 287,084,253.24
  5. Step 5: Solve for x
    x = 287,084,253.24/21,880.80
  6. Step 6: Final answer
    x = 13,120.37

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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.