Home / 19,664.61-27,139.55-11,169.39

Finding the Fourth Proportional to 19,664.61, 27,139.55 and 11,169.39

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Solution

The fourth proportional to 19,664.61, 27,139.55 and 11,169.39 is: 15,415.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,664.61 : 27,139.55 = 11,169.39 : x
  2. Step 2: Convert to fraction form
    19,664.61/27,139.55 = 11,169.39/x
  3. Step 3: Cross multiply
    19,664.61x = 27,139.55 × 11,169.39
  4. Step 4: Simplify right side
    19,664.61x = 303,132,162.53
  5. Step 5: Solve for x
    x = 303,132,162.53/19,664.61
  6. Step 6: Final answer
    x = 15,415.11

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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.