Home / 19,961.70-27,547.13-11,009.78

Finding the Fourth Proportional to 19,961.70, 27,547.13 and 11,009.78

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Solution

The fourth proportional to 19,961.70, 27,547.13 and 11,009.78 is: 15,193.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,961.70 : 27,547.13 = 11,009.78 : x
  2. Step 2: Convert to fraction form
    19,961.70/27,547.13 = 11,009.78/x
  3. Step 3: Cross multiply
    19,961.70x = 27,547.13 × 11,009.78
  4. Step 4: Simplify right side
    19,961.70x = 303,287,840.93
  5. Step 5: Solve for x
    x = 303,287,840.93/19,961.70
  6. Step 6: Final answer
    x = 15,193.49

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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.