Home / 13,109.74-19,670.37-4,345.90

Finding the Fourth Proportional to 13,109.74, 19,670.37 and 4,345.90

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Solution

The fourth proportional to 13,109.74, 19,670.37 and 4,345.90 is: 6,520.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,109.74 : 19,670.37 = 4,345.90 : x
  2. Step 2: Convert to fraction form
    13,109.74/19,670.37 = 4,345.90/x
  3. Step 3: Cross multiply
    13,109.74x = 19,670.37 × 4,345.90
  4. Step 4: Simplify right side
    13,109.74x = 85,485,460.98
  5. Step 5: Solve for x
    x = 85,485,460.98/13,109.74
  6. Step 6: Final answer
    x = 6,520.76

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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.