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Finding the Fourth Proportional to 14,266.60, 19,687.88 and 7,979.02

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Solution

The fourth proportional to 14,266.60, 19,687.88 and 7,979.02 is: 11,011.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,266.60 : 19,687.88 = 7,979.02 : x
  2. Step 2: Convert to fraction form
    14,266.60/19,687.88 = 7,979.02/x
  3. Step 3: Cross multiply
    14,266.60x = 19,687.88 × 7,979.02
  4. Step 4: Simplify right side
    14,266.60x = 157,089,988.28
  5. Step 5: Solve for x
    x = 157,089,988.28/14,266.60
  6. Step 6: Final answer
    x = 11,011.03

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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.