Home / 28,378,353.54-39,162,126.36-15,325,611.18

Finding the Fourth Proportional to 28,378,353.54, 39,162,126.36 and 15,325,611.18

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Solution

The fourth proportional to 28,378,353.54, 39,162,126.36 and 15,325,611.18 is: 21,149,342.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,378,353.54 : 39,162,126.36 = 15,325,611.18 : x
  2. Step 2: Convert to fraction form
    28,378,353.54/39,162,126.36 = 15,325,611.18/x
  3. Step 3: Cross multiply
    28,378,353.54x = 39,162,126.36 × 15,325,611.18
  4. Step 4: Simplify right side
    28,378,353.54x = 600,183,521,575,388.62
  5. Step 5: Solve for x
    x = 600,183,521,575,388.62/28,378,353.54
  6. Step 6: Final answer
    x = 21,149,342.60

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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.