Home / 13,145.58-19,718.37-3,910.86

Finding the Fourth Proportional to 13,145.58, 19,718.37 and 3,910.86

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Solution

The fourth proportional to 13,145.58, 19,718.37 and 3,910.86 is: 5,866.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.58 : 19,718.37 = 3,910.86 : x
  2. Step 2: Convert to fraction form
    13,145.58/19,718.37 = 3,910.86/x
  3. Step 3: Cross multiply
    13,145.58x = 19,718.37 × 3,910.86
  4. Step 4: Simplify right side
    13,145.58x = 77,115,784.50
  5. Step 5: Solve for x
    x = 77,115,784.50/13,145.58
  6. Step 6: Final answer
    x = 5,866.29

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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.