Home / 21,442.40-32,168.40-8,293.60

Finding the Fourth Proportional to 21,442.40, 32,168.40 and 8,293.60

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Solution

The fourth proportional to 21,442.40, 32,168.40 and 8,293.60 is: 12,442.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,442.40 : 32,168.40 = 8,293.60 : x
  2. Step 2: Convert to fraction form
    21,442.40/32,168.40 = 8,293.60/x
  3. Step 3: Cross multiply
    21,442.40x = 32,168.40 × 8,293.60
  4. Step 4: Simplify right side
    21,442.40x = 266,791,842.24
  5. Step 5: Solve for x
    x = 266,791,842.24/21,442.40
  6. Step 6: Final answer
    x = 12,442.26

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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.