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Finding the Fourth Proportional to 14,693.41, 20,276.54 and 8,405.38

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Solution

The fourth proportional to 14,693.41, 20,276.54 and 8,405.38 is: 11,599.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,693.41 : 20,276.54 = 8,405.38 : x
  2. Step 2: Convert to fraction form
    14,693.41/20,276.54 = 8,405.38/x
  3. Step 3: Cross multiply
    14,693.41x = 20,276.54 × 8,405.38
  4. Step 4: Simplify right side
    14,693.41x = 170,431,880.38
  5. Step 5: Solve for x
    x = 170,431,880.38/14,693.41
  6. Step 6: Final answer
    x = 11,599.21

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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.