Home / 20,775,025.14-31,162,980.57-7,128,112.32

Finding the Fourth Proportional to 20,775,025.14, 31,162,980.57 and 7,128,112.32

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Solution

The fourth proportional to 20,775,025.14, 31,162,980.57 and 7,128,112.32 is: 10,692,320.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775,025.14 : 31,162,980.57 = 7,128,112.32 : x
  2. Step 2: Convert to fraction form
    20,775,025.14/31,162,980.57 = 7,128,112.32/x
  3. Step 3: Cross multiply
    20,775,025.14x = 31,162,980.57 × 7,128,112.32
  4. Step 4: Simplify right side
    20,775,025.14x = 222,133,225,728,937.62
  5. Step 5: Solve for x
    x = 222,133,225,728,937.62/20,775,025.14
  6. Step 6: Final answer
    x = 10,692,320.43

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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.