Home / 14,403.88-21,579.90-13,393

Finding the Fourth Proportional to 14,403.88, 21,579.90 and 13,393

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Solution

The fourth proportional to 14,403.88, 21,579.90 and 13,393 is: 20,065.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,403.88 : 21,579.90 = 13,393 : x
  2. Step 2: Convert to fraction form
    14,403.88/21,579.90 = 13,393/x
  3. Step 3: Cross multiply
    14,403.88x = 21,579.90 × 13,393
  4. Step 4: Simplify right side
    14,403.88x = 289,019,600.70
  5. Step 5: Solve for x
    x = 289,019,600.70/14,403.88
  6. Step 6: Final answer
    x = 20,065.40

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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.