Home / 20,408,805.15-28,164,190.22-11,116,346.64

Finding the Fourth Proportional to 20,408,805.15, 28,164,190.22 and 11,116,346.64

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Solution

The fourth proportional to 20,408,805.15, 28,164,190.22 and 11,116,346.64 is: 15,340,579.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,408,805.15 : 28,164,190.22 = 11,116,346.64 : x
  2. Step 2: Convert to fraction form
    20,408,805.15/28,164,190.22 = 11,116,346.64/x
  3. Step 3: Cross multiply
    20,408,805.15x = 28,164,190.22 × 11,116,346.64
  4. Step 4: Simplify right side
    20,408,805.15x = 313,082,901,320,417.88
  5. Step 5: Solve for x
    x = 313,082,901,320,417.88/20,408,805.15
  6. Step 6: Final answer
    x = 15,340,579.67

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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.