Home / 12,790.31-19,188.09-5,394.77

Finding the Fourth Proportional to 12,790.31, 19,188.09 and 5,394.77

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Solution

The fourth proportional to 12,790.31, 19,188.09 and 5,394.77 is: 8,093.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790.31 : 19,188.09 = 5,394.77 : x
  2. Step 2: Convert to fraction form
    12,790.31/19,188.09 = 5,394.77/x
  3. Step 3: Cross multiply
    12,790.31x = 19,188.09 × 5,394.77
  4. Step 4: Simplify right side
    12,790.31x = 103,515,332.29
  5. Step 5: Solve for x
    x = 103,515,332.29/12,790.31
  6. Step 6: Final answer
    x = 8,093.26

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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.