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Finding the Fourth Proportional to 14,359.56, 19,817.08 and 7,986.22

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Solution

The fourth proportional to 14,359.56, 19,817.08 and 7,986.22 is: 11,021.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,359.56 : 19,817.08 = 7,986.22 : x
  2. Step 2: Convert to fraction form
    14,359.56/19,817.08 = 7,986.22/x
  3. Step 3: Cross multiply
    14,359.56x = 19,817.08 × 7,986.22
  4. Step 4: Simplify right side
    14,359.56x = 158,263,560.64
  5. Step 5: Solve for x
    x = 158,263,560.64/14,359.56
  6. Step 6: Final answer
    x = 11,021.48

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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.