Home / 20,623.83-30,935.73-11,853.15

Finding the Fourth Proportional to 20,623.83, 30,935.73 and 11,853.15

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Solution

The fourth proportional to 20,623.83, 30,935.73 and 11,853.15 is: 17,779.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623.83 : 30,935.73 = 11,853.15 : x
  2. Step 2: Convert to fraction form
    20,623.83/30,935.73 = 11,853.15/x
  3. Step 3: Cross multiply
    20,623.83x = 30,935.73 × 11,853.15
  4. Step 4: Simplify right side
    20,623.83x = 366,685,848.05
  5. Step 5: Solve for x
    x = 366,685,848.05/20,623.83
  6. Step 6: Final answer
    x = 17,779.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.