Home / 39,795.62-54,916.80-21,890.63

Finding the Fourth Proportional to 39,795.62, 54,916.80 and 21,890.63

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Solution

The fourth proportional to 39,795.62, 54,916.80 and 21,890.63 is: 30,208.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,795.62 : 54,916.80 = 21,890.63 : x
  2. Step 2: Convert to fraction form
    39,795.62/54,916.80 = 21,890.63/x
  3. Step 3: Cross multiply
    39,795.62x = 54,916.80 × 21,890.63
  4. Step 4: Simplify right side
    39,795.62x = 1,202,163,075
  5. Step 5: Solve for x
    x = 1,202,163,075/39,795.62
  6. Step 6: Final answer
    x = 30,208.42

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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.