Home / 28,106.73-38,782.68-16,620.05

Finding the Fourth Proportional to 28,106.73, 38,782.68 and 16,620.05

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Solution

The fourth proportional to 28,106.73, 38,782.68 and 16,620.05 is: 22,932.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,106.73 : 38,782.68 = 16,620.05 : x
  2. Step 2: Convert to fraction form
    28,106.73/38,782.68 = 16,620.05/x
  3. Step 3: Cross multiply
    28,106.73x = 38,782.68 × 16,620.05
  4. Step 4: Simplify right side
    28,106.73x = 644,569,845.27
  5. Step 5: Solve for x
    x = 644,569,845.27/28,106.73
  6. Step 6: Final answer
    x = 22,932.94

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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.