Home / 13,690.38-20,539.22-4,330.58

Finding the Fourth Proportional to 13,690.38, 20,539.22 and 4,330.58

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Solution

The fourth proportional to 13,690.38, 20,539.22 and 4,330.58 is: 6,497.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,690.38 : 20,539.22 = 4,330.58 : x
  2. Step 2: Convert to fraction form
    13,690.38/20,539.22 = 4,330.58/x
  3. Step 3: Cross multiply
    13,690.38x = 20,539.22 × 4,330.58
  4. Step 4: Simplify right side
    13,690.38x = 88,946,643.48
  5. Step 5: Solve for x
    x = 88,946,643.48/13,690.38
  6. Step 6: Final answer
    x = 6,497.02

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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.