Home / 21,319.20-29,427.84-12,826.08

Finding the Fourth Proportional to 21,319.20, 29,427.84 and 12,826.08

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Solution

The fourth proportional to 21,319.20, 29,427.84 and 12,826.08 is: 17,704.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,319.20 : 29,427.84 = 12,826.08 : x
  2. Step 2: Convert to fraction form
    21,319.20/29,427.84 = 12,826.08/x
  3. Step 3: Cross multiply
    21,319.20x = 29,427.84 × 12,826.08
  4. Step 4: Simplify right side
    21,319.20x = 377,443,830.07
  5. Step 5: Solve for x
    x = 377,443,830.07/21,319.20
  6. Step 6: Final answer
    x = 17,704.41

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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.