Home / 20,678,945.55-31,004,054.19-9,158,134.83

Finding the Fourth Proportional to 20,678,945.55, 31,004,054.19 and 9,158,134.83

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Solution

The fourth proportional to 20,678,945.55, 31,004,054.19 and 9,158,134.83 is: 13,730,840.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678,945.55 : 31,004,054.19 = 9,158,134.83 : x
  2. Step 2: Convert to fraction form
    20,678,945.55/31,004,054.19 = 9,158,134.83/x
  3. Step 3: Cross multiply
    20,678,945.55x = 31,004,054.19 × 9,158,134.83
  4. Step 4: Simplify right side
    20,678,945.55x = 283,939,308,548,646.44
  5. Step 5: Solve for x
    x = 283,939,308,548,646.44/20,678,945.55
  6. Step 6: Final answer
    x = 13,730,840.77

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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.