Home / 19,406.05-29,109.07-8,305.54

Finding the Fourth Proportional to 19,406.05, 29,109.07 and 8,305.54

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Solution

The fourth proportional to 19,406.05, 29,109.07 and 8,305.54 is: 12,458.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,406.05 : 29,109.07 = 8,305.54 : x
  2. Step 2: Convert to fraction form
    19,406.05/29,109.07 = 8,305.54/x
  3. Step 3: Cross multiply
    19,406.05x = 29,109.07 × 8,305.54
  4. Step 4: Simplify right side
    19,406.05x = 241,766,451.71
  5. Step 5: Solve for x
    x = 241,766,451.71/19,406.05
  6. Step 6: Final answer
    x = 12,458.30

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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.