Home / 13,807.50-20,698.60-5,379.69

Finding the Fourth Proportional to 13,807.50, 20,698.60 and 5,379.69

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Solution

The fourth proportional to 13,807.50, 20,698.60 and 5,379.69 is: 8,064.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,807.50 : 20,698.60 = 5,379.69 : x
  2. Step 2: Convert to fraction form
    13,807.50/20,698.60 = 5,379.69/x
  3. Step 3: Cross multiply
    13,807.50x = 20,698.60 × 5,379.69
  4. Step 4: Simplify right side
    13,807.50x = 111,352,024.54
  5. Step 5: Solve for x
    x = 111,352,024.54/13,807.50
  6. Step 6: Final answer
    x = 8,064.60

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1.5x scale

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.