Home / 20,763,731.80-31,145,597.70-9,978,431.95

Finding the Fourth Proportional to 20,763,731.80, 31,145,597.70 and 9,978,431.95

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Solution

The fourth proportional to 20,763,731.80, 31,145,597.70 and 9,978,431.95 is: 14,967,647.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763,731.80 : 31,145,597.70 = 9,978,431.95 : x
  2. Step 2: Convert to fraction form
    20,763,731.80/31,145,597.70 = 9,978,431.95/x
  3. Step 3: Cross multiply
    20,763,731.80x = 31,145,597.70 × 9,978,431.95
  4. Step 4: Simplify right side
    20,763,731.80x = 310,784,227,191,526.50
  5. Step 5: Solve for x
    x = 310,784,227,191,526.50/20,763,731.80
  6. Step 6: Final answer
    x = 14,967,647.93

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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.