Home / 21,916.56-32,811.48-12,883.44

Finding the Fourth Proportional to 21,916.56, 32,811.48 and 12,883.44

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Solution

The fourth proportional to 21,916.56, 32,811.48 and 12,883.44 is: 19,287.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,916.56 : 32,811.48 = 12,883.44 : x
  2. Step 2: Convert to fraction form
    21,916.56/32,811.48 = 12,883.44/x
  3. Step 3: Cross multiply
    21,916.56x = 32,811.48 × 12,883.44
  4. Step 4: Simplify right side
    21,916.56x = 422,724,733.89
  5. Step 5: Solve for x
    x = 422,724,733.89/21,916.56
  6. Step 6: Final answer
    x = 19,287.91

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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.