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Finding the Fourth Proportional to 16,621, 22,938.60 and 9,169

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Solution

The fourth proportional to 16,621, 22,938.60 and 9,169 is: 12,654.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,621 : 22,938.60 = 9,169 : x
  2. Step 2: Convert to fraction form
    16,621/22,938.60 = 9,169/x
  3. Step 3: Cross multiply
    16,621x = 22,938.60 × 9,169
  4. Step 4: Simplify right side
    16,621x = 210,324,023.40
  5. Step 5: Solve for x
    x = 210,324,023.40/16,621
  6. Step 6: Final answer
    x = 12,654.11

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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.