Home / 20,678,957.58-31,004,072.19-9,158,146.86

Finding the Fourth Proportional to 20,678,957.58, 31,004,072.19 and 9,158,146.86

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Solution

The fourth proportional to 20,678,957.58, 31,004,072.19 and 9,158,146.86 is: 13,730,858.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678,957.58 : 31,004,072.19 = 9,158,146.86 : x
  2. Step 2: Convert to fraction form
    20,678,957.58/31,004,072.19 = 9,158,146.86/x
  3. Step 3: Cross multiply
    20,678,957.58x = 31,004,072.19 × 9,158,146.86
  4. Step 4: Simplify right side
    20,678,957.58x = 283,939,846,374,061.81
  5. Step 5: Solve for x
    x = 283,939,846,374,061.81/20,678,957.58
  6. Step 6: Final answer
    x = 13,730,858.79

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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.