Home / 13,790.08-19,036.92-8,489.44

Finding the Fourth Proportional to 13,790.08, 19,036.92 and 8,489.44

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Solution

The fourth proportional to 13,790.08, 19,036.92 and 8,489.44 is: 11,719.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,790.08 : 19,036.92 = 8,489.44 : x
  2. Step 2: Convert to fraction form
    13,790.08/19,036.92 = 8,489.44/x
  3. Step 3: Cross multiply
    13,790.08x = 19,036.92 × 8,489.44
  4. Step 4: Simplify right side
    13,790.08x = 161,612,790.12
  5. Step 5: Solve for x
    x = 161,612,790.12/13,790.08
  6. Step 6: Final answer
    x = 11,719.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.