Home / 39,763.36-54,869.68-21,858.08

Finding the Fourth Proportional to 39,763.36, 54,869.68 and 21,858.08

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Solution

The fourth proportional to 39,763.36, 54,869.68 and 21,858.08 is: 30,162.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,763.36 : 54,869.68 = 21,858.08 : x
  2. Step 2: Convert to fraction form
    39,763.36/54,869.68 = 21,858.08/x
  3. Step 3: Cross multiply
    39,763.36x = 54,869.68 × 21,858.08
  4. Step 4: Simplify right side
    39,763.36x = 1,199,345,855.01
  5. Step 5: Solve for x
    x = 1,199,345,855.01/39,763.36
  6. Step 6: Final answer
    x = 30,162.09

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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.