Home / 19,990.13-27,588.81-11,606.63

Finding the Fourth Proportional to 19,990.13, 27,588.81 and 11,606.63

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Solution

The fourth proportional to 19,990.13, 27,588.81 and 11,606.63 is: 16,018.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,990.13 : 27,588.81 = 11,606.63 : x
  2. Step 2: Convert to fraction form
    19,990.13/27,588.81 = 11,606.63/x
  3. Step 3: Cross multiply
    19,990.13x = 27,588.81 × 11,606.63
  4. Step 4: Simplify right side
    19,990.13x = 320,212,971.87
  5. Step 5: Solve for x
    x = 320,212,971.87/19,990.13
  6. Step 6: Final answer
    x = 16,018.56

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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.