Home / 20,653.22-28,501.44-12,269.72

Finding the Fourth Proportional to 20,653.22, 28,501.44 and 12,269.72

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Solution

The fourth proportional to 20,653.22, 28,501.44 and 12,269.72 is: 16,932.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.22 : 28,501.44 = 12,269.72 : x
  2. Step 2: Convert to fraction form
    20,653.22/28,501.44 = 12,269.72/x
  3. Step 3: Cross multiply
    20,653.22x = 28,501.44 × 12,269.72
  4. Step 4: Simplify right side
    20,653.22x = 349,704,759.65
  5. Step 5: Solve for x
    x = 349,704,759.65/20,653.22
  6. Step 6: Final answer
    x = 16,932.21

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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.