Home / 39,758.94-54,868.77-21,855.30

Finding the Fourth Proportional to 39,758.94, 54,868.77 and 21,855.30

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Solution

The fourth proportional to 39,758.94, 54,868.77 and 21,855.30 is: 30,161.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,758.94 : 54,868.77 = 21,855.30 : x
  2. Step 2: Convert to fraction form
    39,758.94/54,868.77 = 21,855.30/x
  3. Step 3: Cross multiply
    39,758.94x = 54,868.77 × 21,855.30
  4. Step 4: Simplify right side
    39,758.94x = 1,199,173,428.98
  5. Step 5: Solve for x
    x = 1,199,173,428.98/39,758.94
  6. Step 6: Final answer
    x = 30,161.10

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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.