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Finding the Fourth Proportional to 22,394.94, 30,905.01 and 12,963.30

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Solution

The fourth proportional to 22,394.94, 30,905.01 and 12,963.30 is: 17,889.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,394.94 : 30,905.01 = 12,963.30 : x
  2. Step 2: Convert to fraction form
    22,394.94/30,905.01 = 12,963.30/x
  3. Step 3: Cross multiply
    22,394.94x = 30,905.01 × 12,963.30
  4. Step 4: Simplify right side
    22,394.94x = 400,630,916.13
  5. Step 5: Solve for x
    x = 400,630,916.13/22,394.94
  6. Step 6: Final answer
    x = 17,889.35

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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.