Home / 19,688.59-27,169.18-11,305.09

Finding the Fourth Proportional to 19,688.59, 27,169.18 and 11,305.09

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Solution

The fourth proportional to 19,688.59, 27,169.18 and 11,305.09 is: 15,600.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,688.59 : 27,169.18 = 11,305.09 : x
  2. Step 2: Convert to fraction form
    19,688.59/27,169.18 = 11,305.09/x
  3. Step 3: Cross multiply
    19,688.59x = 27,169.18 × 11,305.09
  4. Step 4: Simplify right side
    19,688.59x = 307,150,025.13
  5. Step 5: Solve for x
    x = 307,150,025.13/19,688.59
  6. Step 6: Final answer
    x = 15,600.41

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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.