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Finding the Fourth Proportional to 14,347.78, 19,800.39 and 7,974.70

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Solution

The fourth proportional to 14,347.78, 19,800.39 and 7,974.70 is: 11,005.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,347.78 : 19,800.39 = 7,974.70 : x
  2. Step 2: Convert to fraction form
    14,347.78/19,800.39 = 7,974.70/x
  3. Step 3: Cross multiply
    14,347.78x = 19,800.39 × 7,974.70
  4. Step 4: Simplify right side
    14,347.78x = 157,902,170.13
  5. Step 5: Solve for x
    x = 157,902,170.13/14,347.78
  6. Step 6: Final answer
    x = 11,005.34

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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.