Home / 15,685,939.45-21,647,247.23-8,716,590.98

Finding the Fourth Proportional to 15,685,939.45, 21,647,247.23 and 8,716,590.98

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Solution

The fourth proportional to 15,685,939.45, 21,647,247.23 and 8,716,590.98 is: 12,029,257.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,685,939.45 : 21,647,247.23 = 8,716,590.98 : x
  2. Step 2: Convert to fraction form
    15,685,939.45/21,647,247.23 = 8,716,590.98/x
  3. Step 3: Cross multiply
    15,685,939.45x = 21,647,247.23 × 8,716,590.98
  4. Step 4: Simplify right side
    15,685,939.45x = 188,690,199,946,848
  5. Step 5: Solve for x
    x = 188,690,199,946,848/15,685,939.45
  6. Step 6: Final answer
    x = 12,029,257.19

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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.