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Finding the Fourth Proportional to 14,353.16, 19,808.26 and 7,979.80

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Solution

The fourth proportional to 14,353.16, 19,808.26 and 7,979.80 is: 11,012.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,353.16 : 19,808.26 = 7,979.80 : x
  2. Step 2: Convert to fraction form
    14,353.16/19,808.26 = 7,979.80/x
  3. Step 3: Cross multiply
    14,353.16x = 19,808.26 × 7,979.80
  4. Step 4: Simplify right side
    14,353.16x = 158,066,015.61
  5. Step 5: Solve for x
    x = 158,066,015.61/14,353.16
  6. Step 6: Final answer
    x = 11,012.63

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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.