Home / 28,378,351.53-39,162,123.62-15,325,609.18

Finding the Fourth Proportional to 28,378,351.53, 39,162,123.62 and 15,325,609.18

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Solution

The fourth proportional to 28,378,351.53, 39,162,123.62 and 15,325,609.18 is: 21,149,339.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,378,351.53 : 39,162,123.62 = 15,325,609.18 : x
  2. Step 2: Convert to fraction form
    28,378,351.53/39,162,123.62 = 15,325,609.18/x
  3. Step 3: Cross multiply
    28,378,351.53x = 39,162,123.62 × 15,325,609.18
  4. Step 4: Simplify right side
    28,378,351.53x = 600,183,401,258,966.75
  5. Step 5: Solve for x
    x = 600,183,401,258,966.75/28,378,351.53
  6. Step 6: Final answer
    x = 21,149,339.86

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Double scale
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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.