Home / 13,828.65-20,729.85-5,513.77

Finding the Fourth Proportional to 13,828.65, 20,729.85 and 5,513.77

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Solution

The fourth proportional to 13,828.65, 20,729.85 and 5,513.77 is: 8,265.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.65 : 20,729.85 = 5,513.77 : x
  2. Step 2: Convert to fraction form
    13,828.65/20,729.85 = 5,513.77/x
  3. Step 3: Cross multiply
    13,828.65x = 20,729.85 × 5,513.77
  4. Step 4: Simplify right side
    13,828.65x = 114,299,625.03
  5. Step 5: Solve for x
    x = 114,299,625.03/13,828.65
  6. Step 6: Final answer
    x = 8,265.42

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1.5x scale

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.