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Finding the Fourth Proportional to 14,668.40, 21,986.40 and 8,099.30

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Solution

The fourth proportional to 14,668.40, 21,986.40 and 8,099.30 is: 12,140.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,668.40 : 21,986.40 = 8,099.30 : x
  2. Step 2: Convert to fraction form
    14,668.40/21,986.40 = 8,099.30/x
  3. Step 3: Cross multiply
    14,668.40x = 21,986.40 × 8,099.30
  4. Step 4: Simplify right side
    14,668.40x = 178,074,449.52
  5. Step 5: Solve for x
    x = 178,074,449.52/14,668.40
  6. Step 6: Final answer
    x = 12,140.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.