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Finding the Fourth Proportional to 16,998.80, 23,457.85 and 9,731.08

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Solution

The fourth proportional to 16,998.80, 23,457.85 and 9,731.08 is: 13,428.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,998.80 : 23,457.85 = 9,731.08 : x
  2. Step 2: Convert to fraction form
    16,998.80/23,457.85 = 9,731.08/x
  3. Step 3: Cross multiply
    16,998.80x = 23,457.85 × 9,731.08
  4. Step 4: Simplify right side
    16,998.80x = 228,270,214.98
  5. Step 5: Solve for x
    x = 228,270,214.98/16,998.80
  6. Step 6: Final answer
    x = 13,428.61

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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.