Home / 21,068.58-31,580.19-11,197.94

Finding the Fourth Proportional to 21,068.58, 31,580.19 and 11,197.94

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Solution

The fourth proportional to 21,068.58, 31,580.19 and 11,197.94 is: 16,784.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,068.58 : 31,580.19 = 11,197.94 : x
  2. Step 2: Convert to fraction form
    21,068.58/31,580.19 = 11,197.94/x
  3. Step 3: Cross multiply
    21,068.58x = 31,580.19 × 11,197.94
  4. Step 4: Simplify right side
    21,068.58x = 353,633,072.81
  5. Step 5: Solve for x
    x = 353,633,072.81/21,068.58
  6. Step 6: Final answer
    x = 16,784.86

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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.