Home / 16,821.20-23,213.47-9,267.51

Finding the Fourth Proportional to 16,821.20, 23,213.47 and 9,267.51

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Solution

The fourth proportional to 16,821.20, 23,213.47 and 9,267.51 is: 12,789.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,821.20 : 23,213.47 = 9,267.51 : x
  2. Step 2: Convert to fraction form
    16,821.20/23,213.47 = 9,267.51/x
  3. Step 3: Cross multiply
    16,821.20x = 23,213.47 × 9,267.51
  4. Step 4: Simplify right side
    16,821.20x = 215,131,146.62
  5. Step 5: Solve for x
    x = 215,131,146.62/16,821.20
  6. Step 6: Final answer
    x = 12,789.28

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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.