Home / 20,838.37-31,243.62-11,482.87

Finding the Fourth Proportional to 20,838.37, 31,243.62 and 11,482.87

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Solution

The fourth proportional to 20,838.37, 31,243.62 and 11,482.87 is: 17,216.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,838.37 : 31,243.62 = 11,482.87 : x
  2. Step 2: Convert to fraction form
    20,838.37/31,243.62 = 11,482.87/x
  3. Step 3: Cross multiply
    20,838.37x = 31,243.62 × 11,482.87
  4. Step 4: Simplify right side
    20,838.37x = 358,766,426.79
  5. Step 5: Solve for x
    x = 358,766,426.79/20,838.37
  6. Step 6: Final answer
    x = 17,216.63

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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.