Home / 19,780.30-27,295.44-11,282.79

Finding the Fourth Proportional to 19,780.30, 27,295.44 and 11,282.79

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Solution

The fourth proportional to 19,780.30, 27,295.44 and 11,282.79 is: 15,569.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,780.30 : 27,295.44 = 11,282.79 : x
  2. Step 2: Convert to fraction form
    19,780.30/27,295.44 = 11,282.79/x
  3. Step 3: Cross multiply
    19,780.30x = 27,295.44 × 11,282.79
  4. Step 4: Simplify right side
    19,780.30x = 307,968,717.48
  5. Step 5: Solve for x
    x = 307,968,717.48/19,780.30
  6. Step 6: Final answer
    x = 15,569.47

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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.