Home / 13,419,765.21-20,129,085.58-4,321,661.45

Finding the Fourth Proportional to 13,419,765.21, 20,129,085.58 and 4,321,661.45

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Solution

The fourth proportional to 13,419,765.21, 20,129,085.58 and 4,321,661.45 is: 6,482,311.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419,765.21 : 20,129,085.58 = 4,321,661.45 : x
  2. Step 2: Convert to fraction form
    13,419,765.21/20,129,085.58 = 4,321,661.45/x
  3. Step 3: Cross multiply
    13,419,765.21x = 20,129,085.58 × 4,321,661.45
  4. Step 4: Simplify right side
    13,419,765.21x = 86,991,093,071,486.11
  5. Step 5: Solve for x
    x = 86,991,093,071,486.11/13,419,765.21
  6. Step 6: Final answer
    x = 6,482,311.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.