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Finding the Fourth Proportional to 16,989.44, 23,446.90 and 9,918.14

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Solution

The fourth proportional to 16,989.44, 23,446.90 and 9,918.14 is: 13,687.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,989.44 : 23,446.90 = 9,918.14 : x
  2. Step 2: Convert to fraction form
    16,989.44/23,446.90 = 9,918.14/x
  3. Step 3: Cross multiply
    16,989.44x = 23,446.90 × 9,918.14
  4. Step 4: Simplify right side
    16,989.44x = 232,549,636.77
  5. Step 5: Solve for x
    x = 232,549,636.77/16,989.44
  6. Step 6: Final answer
    x = 13,687.89

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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.