Home / 20,188,420.80-30,282,631.20-11,685,364.80

Finding the Fourth Proportional to 20,188,420.80, 30,282,631.20 and 11,685,364.80

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Solution

The fourth proportional to 20,188,420.80, 30,282,631.20 and 11,685,364.80 is: 17,528,047.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188,420.80 : 30,282,631.20 = 11,685,364.80 : x
  2. Step 2: Convert to fraction form
    20,188,420.80/30,282,631.20 = 11,685,364.80/x
  3. Step 3: Cross multiply
    20,188,420.80x = 30,282,631.20 × 11,685,364.80
  4. Step 4: Simplify right side
    20,188,420.80x = 353,863,592,675,861.75
  5. Step 5: Solve for x
    x = 353,863,592,675,861.75/20,188,420.80
  6. Step 6: Final answer
    x = 17,528,047.20

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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.