Home / 20,554.94-28,367.31-11,603.21

Finding the Fourth Proportional to 20,554.94, 28,367.31 and 11,603.21

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Solution

The fourth proportional to 20,554.94, 28,367.31 and 11,603.21 is: 16,013.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,554.94 : 28,367.31 = 11,603.21 : x
  2. Step 2: Convert to fraction form
    20,554.94/28,367.31 = 11,603.21/x
  3. Step 3: Cross multiply
    20,554.94x = 28,367.31 × 11,603.21
  4. Step 4: Simplify right side
    20,554.94x = 329,151,855.07
  5. Step 5: Solve for x
    x = 329,151,855.07/20,554.94
  6. Step 6: Final answer
    x = 16,013.27

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1.5x scale

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.