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Finding the Fourth Proportional to 16,783, 23,161.50 and 9,331.48

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Solution

The fourth proportional to 16,783, 23,161.50 and 9,331.48 is: 12,877.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,783 : 23,161.50 = 9,331.48 : x
  2. Step 2: Convert to fraction form
    16,783/23,161.50 = 9,331.48/x
  3. Step 3: Cross multiply
    16,783x = 23,161.50 × 9,331.48
  4. Step 4: Simplify right side
    16,783x = 216,131,074.02
  5. Step 5: Solve for x
    x = 216,131,074.02/16,783
  6. Step 6: Final answer
    x = 12,877.98

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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.