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Finding the Fourth Proportional to 14,668.10, 20,245.62 and 9,639.14

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Solution

The fourth proportional to 14,668.10, 20,245.62 and 9,639.14 is: 13,304.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,668.10 : 20,245.62 = 9,639.14 : x
  2. Step 2: Convert to fraction form
    14,668.10/20,245.62 = 9,639.14/x
  3. Step 3: Cross multiply
    14,668.10x = 20,245.62 × 9,639.14
  4. Step 4: Simplify right side
    14,668.10x = 195,150,264.34
  5. Step 5: Solve for x
    x = 195,150,264.34/14,668.10
  6. Step 6: Final answer
    x = 13,304.40

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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.