Home / 20,965,015.23-31,455,089.73-7,320,171.84

Finding the Fourth Proportional to 20,965,015.23, 31,455,089.73 and 7,320,171.84

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Solution

The fourth proportional to 20,965,015.23, 31,455,089.73 and 7,320,171.84 is: 10,982,899.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,965,015.23 : 31,455,089.73 = 7,320,171.84 : x
  2. Step 2: Convert to fraction form
    20,965,015.23/31,455,089.73 = 7,320,171.84/x
  3. Step 3: Cross multiply
    20,965,015.23x = 31,455,089.73 × 7,320,171.84
  4. Step 4: Simplify right side
    20,965,015.23x = 230,256,662,066,219.19
  5. Step 5: Solve for x
    x = 230,256,662,066,219.19/20,965,015.23
  6. Step 6: Final answer
    x = 10,982,899.82

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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.