Home / 20,169,010.80-30,217,430.70-12,267,379.80

Finding the Fourth Proportional to 20,169,010.80, 30,217,430.70 and 12,267,379.80

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Solution

The fourth proportional to 20,169,010.80, 30,217,430.70 and 12,267,379.80 is: 18,379,121.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,169,010.80 : 30,217,430.70 = 12,267,379.80 : x
  2. Step 2: Convert to fraction form
    20,169,010.80/30,217,430.70 = 12,267,379.80/x
  3. Step 3: Cross multiply
    20,169,010.80x = 30,217,430.70 × 12,267,379.80
  4. Step 4: Simplify right side
    20,169,010.80x = 370,688,698,977,079.88
  5. Step 5: Solve for x
    x = 370,688,698,977,079.88/20,169,010.80
  6. Step 6: Final answer
    x = 18,379,121.45

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1.5x scale

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.