Home / 20,779,993.30-31,172,942.40-6,401,561.80

Finding the Fourth Proportional to 20,779,993.30, 31,172,942.40 and 6,401,561.80

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Solution

The fourth proportional to 20,779,993.30, 31,172,942.40 and 6,401,561.80 is: 9,603,252.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779,993.30 : 31,172,942.40 = 6,401,561.80 : x
  2. Step 2: Convert to fraction form
    20,779,993.30/31,172,942.40 = 6,401,561.80/x
  3. Step 3: Cross multiply
    20,779,993.30x = 31,172,942.40 × 6,401,561.80
  4. Step 4: Simplify right side
    20,779,993.30x = 199,555,517,261,440.31
  5. Step 5: Solve for x
    x = 199,555,517,261,440.31/20,779,993.30
  6. Step 6: Final answer
    x = 9,603,252.24

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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.