Home / 19,938.18-27,513.09-11,555.22

Finding the Fourth Proportional to 19,938.18, 27,513.09 and 11,555.22

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Solution

The fourth proportional to 19,938.18, 27,513.09 and 11,555.22 is: 15,945.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,938.18 : 27,513.09 = 11,555.22 : x
  2. Step 2: Convert to fraction form
    19,938.18/27,513.09 = 11,555.22/x
  3. Step 3: Cross multiply
    19,938.18x = 27,513.09 × 11,555.22
  4. Step 4: Simplify right side
    19,938.18x = 317,919,807.83
  5. Step 5: Solve for x
    x = 317,919,807.83/19,938.18
  6. Step 6: Final answer
    x = 15,945.28

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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.