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Finding the Fourth Proportional to 19,553.51, 26,976.77 and 12,842.77

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Solution

The fourth proportional to 19,553.51, 26,976.77 and 12,842.77 is: 17,718.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,553.51 : 26,976.77 = 12,842.77 : x
  2. Step 2: Convert to fraction form
    19,553.51/26,976.77 = 12,842.77/x
  3. Step 3: Cross multiply
    19,553.51x = 26,976.77 × 12,842.77
  4. Step 4: Simplify right side
    19,553.51x = 346,456,452.45
  5. Step 5: Solve for x
    x = 346,456,452.45/19,553.51
  6. Step 6: Final answer
    x = 17,718.38

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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.