Home / 13,005.77-19,509.96-3,645.81

Finding the Fourth Proportional to 13,005.77, 19,509.96 and 3,645.81

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Solution

The fourth proportional to 13,005.77, 19,509.96 and 3,645.81 is: 5,469.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,005.77 : 19,509.96 = 3,645.81 : x
  2. Step 2: Convert to fraction form
    13,005.77/19,509.96 = 3,645.81/x
  3. Step 3: Cross multiply
    13,005.77x = 19,509.96 × 3,645.81
  4. Step 4: Simplify right side
    13,005.77x = 71,129,620.94
  5. Step 5: Solve for x
    x = 71,129,620.94/13,005.77
  6. Step 6: Final answer
    x = 5,469.08

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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.