Home / 20,142,113.21-30,219,065.49-6,494,985.12

Finding the Fourth Proportional to 20,142,113.21, 30,219,065.49 and 6,494,985.12

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Solution

The fourth proportional to 20,142,113.21, 30,219,065.49 and 6,494,985.12 is: 9,744,378.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142,113.21 : 30,219,065.49 = 6,494,985.12 : x
  2. Step 2: Convert to fraction form
    20,142,113.21/30,219,065.49 = 6,494,985.12/x
  3. Step 3: Cross multiply
    20,142,113.21x = 30,219,065.49 × 6,494,985.12
  4. Step 4: Simplify right side
    20,142,113.21x = 196,272,380,697,855.50
  5. Step 5: Solve for x
    x = 196,272,380,697,855.50/20,142,113.21
  6. Step 6: Final answer
    x = 9,744,378.79

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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.