Home / 20,696.86-31,045.57-5,905.77

Finding the Fourth Proportional to 20,696.86, 31,045.57 and 5,905.77

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Solution

The fourth proportional to 20,696.86, 31,045.57 and 5,905.77 is: 8,858.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,696.86 : 31,045.57 = 5,905.77 : x
  2. Step 2: Convert to fraction form
    20,696.86/31,045.57 = 5,905.77/x
  3. Step 3: Cross multiply
    20,696.86x = 31,045.57 × 5,905.77
  4. Step 4: Simplify right side
    20,696.86x = 183,347,990.51
  5. Step 5: Solve for x
    x = 183,347,990.51/20,696.86
  6. Step 6: Final answer
    x = 8,858.74

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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.