Home / 12,890.13-19,336.37-4,005.51

Finding the Fourth Proportional to 12,890.13, 19,336.37 and 4,005.51

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Solution

The fourth proportional to 12,890.13, 19,336.37 and 4,005.51 is: 6,008.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890.13 : 19,336.37 = 4,005.51 : x
  2. Step 2: Convert to fraction form
    12,890.13/19,336.37 = 4,005.51/x
  3. Step 3: Cross multiply
    12,890.13x = 19,336.37 × 4,005.51
  4. Step 4: Simplify right side
    12,890.13x = 77,451,906.69
  5. Step 5: Solve for x
    x = 77,451,906.69/12,890.13
  6. Step 6: Final answer
    x = 6,008.62

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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.