Home / 39,813.95-54,941.87-21,907.28

Finding the Fourth Proportional to 39,813.95, 54,941.87 and 21,907.28

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Solution

The fourth proportional to 39,813.95, 54,941.87 and 21,907.28 is: 30,231.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,813.95 : 54,941.87 = 21,907.28 : x
  2. Step 2: Convert to fraction form
    39,813.95/54,941.87 = 21,907.28/x
  3. Step 3: Cross multiply
    39,813.95x = 54,941.87 × 21,907.28
  4. Step 4: Simplify right side
    39,813.95x = 1,203,626,545.57
  5. Step 5: Solve for x
    x = 1,203,626,545.57/39,813.95
  6. Step 6: Final answer
    x = 30,231.28

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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.