Home / 20,353.96-28,077-11,855.08

Finding the Fourth Proportional to 20,353.96, 28,077 and 11,855.08

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Solution

The fourth proportional to 20,353.96, 28,077 and 11,855.08 is: 16,353.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,353.96 : 28,077 = 11,855.08 : x
  2. Step 2: Convert to fraction form
    20,353.96/28,077 = 11,855.08/x
  3. Step 3: Cross multiply
    20,353.96x = 28,077 × 11,855.08
  4. Step 4: Simplify right side
    20,353.96x = 332,855,081.16
  5. Step 5: Solve for x
    x = 332,855,081.16/20,353.96
  6. Step 6: Final answer
    x = 16,353.33

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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.