Home / 13,865.10-20,793.60-4,979.40

Finding the Fourth Proportional to 13,865.10, 20,793.60 and 4,979.40

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Solution

The fourth proportional to 13,865.10, 20,793.60 and 4,979.40 is: 7,467.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865.10 : 20,793.60 = 4,979.40 : x
  2. Step 2: Convert to fraction form
    13,865.10/20,793.60 = 4,979.40/x
  3. Step 3: Cross multiply
    13,865.10x = 20,793.60 × 4,979.40
  4. Step 4: Simplify right side
    13,865.10x = 103,539,651.84
  5. Step 5: Solve for x
    x = 103,539,651.84/13,865.10
  6. Step 6: Final answer
    x = 7,467.65

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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.