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Finding the Fourth Proportional to 16,990.54, 23,448.81 and 9,723.30

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Solution

The fourth proportional to 16,990.54, 23,448.81 and 9,723.30 is: 13,419.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,990.54 : 23,448.81 = 9,723.30 : x
  2. Step 2: Convert to fraction form
    16,990.54/23,448.81 = 9,723.30/x
  3. Step 3: Cross multiply
    16,990.54x = 23,448.81 × 9,723.30
  4. Step 4: Simplify right side
    16,990.54x = 227,999,765.66
  5. Step 5: Solve for x
    x = 227,999,765.66/16,990.54
  6. Step 6: Final answer
    x = 13,419.22

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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.