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Finding the Fourth Proportional to 14,986.44, 20,681.96 and 8,615.10

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Solution

The fourth proportional to 14,986.44, 20,681.96 and 8,615.10 is: 11,889.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,986.44 : 20,681.96 = 8,615.10 : x
  2. Step 2: Convert to fraction form
    14,986.44/20,681.96 = 8,615.10/x
  3. Step 3: Cross multiply
    14,986.44x = 20,681.96 × 8,615.10
  4. Step 4: Simplify right side
    14,986.44x = 178,177,153.60
  5. Step 5: Solve for x
    x = 178,177,153.60/14,986.44
  6. Step 6: Final answer
    x = 11,889.22

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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.