Home / 21,211.54-29,268.41-12,259.88

Finding the Fourth Proportional to 21,211.54, 29,268.41 and 12,259.88

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Solution

The fourth proportional to 21,211.54, 29,268.41 and 12,259.88 is: 16,916.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.54 : 29,268.41 = 12,259.88 : x
  2. Step 2: Convert to fraction form
    21,211.54/29,268.41 = 12,259.88/x
  3. Step 3: Cross multiply
    21,211.54x = 29,268.41 × 12,259.88
  4. Step 4: Simplify right side
    21,211.54x = 358,826,986.75
  5. Step 5: Solve for x
    x = 358,826,986.75/21,211.54
  6. Step 6: Final answer
    x = 16,916.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.