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Finding the Fourth Proportional to 14,986.60, 20,682.98 and 8,698.60

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Solution

The fourth proportional to 14,986.60, 20,682.98 and 8,698.60 is: 12,004.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,986.60 : 20,682.98 = 8,698.60 : x
  2. Step 2: Convert to fraction form
    14,986.60/20,682.98 = 8,698.60/x
  3. Step 3: Cross multiply
    14,986.60x = 20,682.98 × 8,698.60
  4. Step 4: Simplify right side
    14,986.60x = 179,912,969.83
  5. Step 5: Solve for x
    x = 179,912,969.83/14,986.60
  6. Step 6: Final answer
    x = 12,004.92

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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.