Home / 18,917.08-26,105.19-11,847.40

Finding the Fourth Proportional to 18,917.08, 26,105.19 and 11,847.40

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Solution

The fourth proportional to 18,917.08, 26,105.19 and 11,847.40 is: 16,349.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,917.08 : 26,105.19 = 11,847.40 : x
  2. Step 2: Convert to fraction form
    18,917.08/26,105.19 = 11,847.40/x
  3. Step 3: Cross multiply
    18,917.08x = 26,105.19 × 11,847.40
  4. Step 4: Simplify right side
    18,917.08x = 309,278,518.32
  5. Step 5: Solve for x
    x = 309,278,518.32/18,917.08
  6. Step 6: Final answer
    x = 16,349.17

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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.