Home / 21,245.36-31,844-10,698.62

Finding the Fourth Proportional to 21,245.36, 31,844 and 10,698.62

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Solution

The fourth proportional to 21,245.36, 31,844 and 10,698.62 is: 16,035.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,245.36 : 31,844 = 10,698.62 : x
  2. Step 2: Convert to fraction form
    21,245.36/31,844 = 10,698.62/x
  3. Step 3: Cross multiply
    21,245.36x = 31,844 × 10,698.62
  4. Step 4: Simplify right side
    21,245.36x = 340,686,855.28
  5. Step 5: Solve for x
    x = 340,686,855.28/21,245.36
  6. Step 6: Final answer
    x = 16,035.82

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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.