Home / 13,864.34-20,797.42-4,978.74

Finding the Fourth Proportional to 13,864.34, 20,797.42 and 4,978.74

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Solution

The fourth proportional to 13,864.34, 20,797.42 and 4,978.74 is: 7,468.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,864.34 : 20,797.42 = 4,978.74 : x
  2. Step 2: Convert to fraction form
    13,864.34/20,797.42 = 4,978.74/x
  3. Step 3: Cross multiply
    13,864.34x = 20,797.42 × 4,978.74
  4. Step 4: Simplify right side
    13,864.34x = 103,544,946.85
  5. Step 5: Solve for x
    x = 103,544,946.85/13,864.34
  6. Step 6: Final answer
    x = 7,468.44

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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.