Home / 16,821.05-23,215.77-12,834.63

Finding the Fourth Proportional to 16,821.05, 23,215.77 and 12,834.63

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Solution

The fourth proportional to 16,821.05, 23,215.77 and 12,834.63 is: 17,713.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,821.05 : 23,215.77 = 12,834.63 : x
  2. Step 2: Convert to fraction form
    16,821.05/23,215.77 = 12,834.63/x
  3. Step 3: Cross multiply
    16,821.05x = 23,215.77 × 12,834.63
  4. Step 4: Simplify right side
    16,821.05x = 297,965,818.12
  5. Step 5: Solve for x
    x = 297,965,818.12/16,821.05
  6. Step 6: Final answer
    x = 17,713.87

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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.