Home / 21,107,846.80-31,661,770.20-9,770,438.80

Finding the Fourth Proportional to 21,107,846.80, 31,661,770.20 and 9,770,438.80

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Solution

The fourth proportional to 21,107,846.80, 31,661,770.20 and 9,770,438.80 is: 14,655,658.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,107,846.80 : 31,661,770.20 = 9,770,438.80 : x
  2. Step 2: Convert to fraction form
    21,107,846.80/31,661,770.20 = 9,770,438.80/x
  3. Step 3: Cross multiply
    21,107,846.80x = 31,661,770.20 × 9,770,438.80
  4. Step 4: Simplify right side
    21,107,846.80x = 309,349,388,038,763.75
  5. Step 5: Solve for x
    x = 309,349,388,038,763.75/21,107,846.80
  6. Step 6: Final answer
    x = 14,655,658.20

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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.