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Finding the Fourth Proportional to 19,553.01, 26,976.08 and 12,842.28

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Solution

The fourth proportional to 19,553.01, 26,976.08 and 12,842.28 is: 17,717.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,553.01 : 26,976.08 = 12,842.28 : x
  2. Step 2: Convert to fraction form
    19,553.01/26,976.08 = 12,842.28/x
  3. Step 3: Cross multiply
    19,553.01x = 26,976.08 × 12,842.28
  4. Step 4: Simplify right side
    19,553.01x = 346,434,308.45
  5. Step 5: Solve for x
    x = 346,434,308.45/19,553.01
  6. Step 6: Final answer
    x = 17,717.70

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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.