Home / 19,181.19-28,723.56-12,139.93

Finding the Fourth Proportional to 19,181.19, 28,723.56 and 12,139.93

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Solution

The fourth proportional to 19,181.19, 28,723.56 and 12,139.93 is: 18,179.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,181.19 : 28,723.56 = 12,139.93 : x
  2. Step 2: Convert to fraction form
    19,181.19/28,723.56 = 12,139.93/x
  3. Step 3: Cross multiply
    19,181.19x = 28,723.56 × 12,139.93
  4. Step 4: Simplify right side
    19,181.19x = 348,702,007.75
  5. Step 5: Solve for x
    x = 348,702,007.75/19,181.19
  6. Step 6: Final answer
    x = 18,179.37

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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.