Home / 12,790.32-19,188.08-5,394.81

Finding the Fourth Proportional to 12,790.32, 19,188.08 and 5,394.81

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Solution

The fourth proportional to 12,790.32, 19,188.08 and 5,394.81 is: 8,093.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790.32 : 19,188.08 = 5,394.81 : x
  2. Step 2: Convert to fraction form
    12,790.32/19,188.08 = 5,394.81/x
  3. Step 3: Cross multiply
    12,790.32x = 19,188.08 × 5,394.81
  4. Step 4: Simplify right side
    12,790.32x = 103,515,963.41
  5. Step 5: Solve for x
    x = 103,515,963.41/12,790.32
  6. Step 6: Final answer
    x = 8,093.31

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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.