Home / 28,378,351.60-39,162,123.69-15,325,609.25

Finding the Fourth Proportional to 28,378,351.60, 39,162,123.69 and 15,325,609.25

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Solution

The fourth proportional to 28,378,351.60, 39,162,123.69 and 15,325,609.25 is: 21,149,339.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,378,351.60 : 39,162,123.69 = 15,325,609.25 : x
  2. Step 2: Convert to fraction form
    28,378,351.60/39,162,123.69 = 15,325,609.25/x
  3. Step 3: Cross multiply
    28,378,351.60x = 39,162,123.69 × 15,325,609.25
  4. Step 4: Simplify right side
    28,378,351.60x = 600,183,405,073,108.12
  5. Step 5: Solve for x
    x = 600,183,405,073,108.12/28,378,351.60
  6. Step 6: Final answer
    x = 21,149,339.95

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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.