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Finding the Fourth Proportional to 16,815.79, 23,204.77 and 9,363.79

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Solution

The fourth proportional to 16,815.79, 23,204.77 and 9,363.79 is: 12,921.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,815.79 : 23,204.77 = 9,363.79 : x
  2. Step 2: Convert to fraction form
    16,815.79/23,204.77 = 9,363.79/x
  3. Step 3: Cross multiply
    16,815.79x = 23,204.77 × 9,363.79
  4. Step 4: Simplify right side
    16,815.79x = 217,284,593.28
  5. Step 5: Solve for x
    x = 217,284,593.28/16,815.79
  6. Step 6: Final answer
    x = 12,921.46

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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.