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Finding the Fourth Proportional to 12,651.23, 18,962.06 and 9,521.21

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Solution

The fourth proportional to 12,651.23, 18,962.06 and 9,521.21 is: 14,270.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,651.23 : 18,962.06 = 9,521.21 : x
  2. Step 2: Convert to fraction form
    12,651.23/18,962.06 = 9,521.21/x
  3. Step 3: Cross multiply
    12,651.23x = 18,962.06 × 9,521.21
  4. Step 4: Simplify right side
    12,651.23x = 180,541,612.88
  5. Step 5: Solve for x
    x = 180,541,612.88/12,651.23
  6. Step 6: Final answer
    x = 14,270.68

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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.