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Finding the Fourth Proportional to 12,977, 17,890.23 and 10,968.74

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Solution

The fourth proportional to 12,977, 17,890.23 and 10,968.74 is: 15,121.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,977 : 17,890.23 = 10,968.74 : x
  2. Step 2: Convert to fraction form
    12,977/17,890.23 = 10,968.74/x
  3. Step 3: Cross multiply
    12,977x = 17,890.23 × 10,968.74
  4. Step 4: Simplify right side
    12,977x = 196,233,281.41
  5. Step 5: Solve for x
    x = 196,233,281.41/12,977
  6. Step 6: Final answer
    x = 15,121.62

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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.