Home / 16,891.20-23,312.73-9,821.73

Finding the Fourth Proportional to 16,891.20, 23,312.73 and 9,821.73

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Solution

The fourth proportional to 16,891.20, 23,312.73 and 9,821.73 is: 13,555.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,891.20 : 23,312.73 = 9,821.73 : x
  2. Step 2: Convert to fraction form
    16,891.20/23,312.73 = 9,821.73/x
  3. Step 3: Cross multiply
    16,891.20x = 23,312.73 × 9,821.73
  4. Step 4: Simplify right side
    16,891.20x = 228,971,339.62
  5. Step 5: Solve for x
    x = 228,971,339.62/16,891.20
  6. Step 6: Final answer
    x = 13,555.66

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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.