Home / 53,021.12-79,529.85-13,578.57

Finding the Fourth Proportional to 53,021.12, 79,529.85 and 13,578.57

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Solution

The fourth proportional to 53,021.12, 79,529.85 and 13,578.57 is: 20,367.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,021.12 : 79,529.85 = 13,578.57 : x
  2. Step 2: Convert to fraction form
    53,021.12/79,529.85 = 13,578.57/x
  3. Step 3: Cross multiply
    53,021.12x = 79,529.85 × 13,578.57
  4. Step 4: Simplify right side
    53,021.12x = 1,079,901,635.31
  5. Step 5: Solve for x
    x = 1,079,901,635.31/53,021.12
  6. Step 6: Final answer
    x = 20,367.39

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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.