Home / 13,345.72-20,020.75-4,109.56

Finding the Fourth Proportional to 13,345.72, 20,020.75 and 4,109.56

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Solution

The fourth proportional to 13,345.72, 20,020.75 and 4,109.56 is: 6,165.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,345.72 : 20,020.75 = 4,109.56 : x
  2. Step 2: Convert to fraction form
    13,345.72/20,020.75 = 4,109.56/x
  3. Step 3: Cross multiply
    13,345.72x = 20,020.75 × 4,109.56
  4. Step 4: Simplify right side
    13,345.72x = 82,276,473.37
  5. Step 5: Solve for x
    x = 82,276,473.37/13,345.72
  6. Step 6: Final answer
    x = 6,165.01

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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.