Home / 39,357.09-54,312.81-21,451.73

Finding the Fourth Proportional to 39,357.09, 54,312.81 and 21,451.73

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Solution

The fourth proportional to 39,357.09, 54,312.81 and 21,451.73 is: 29,603.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,357.09 : 54,312.81 = 21,451.73 : x
  2. Step 2: Convert to fraction form
    39,357.09/54,312.81 = 21,451.73/x
  3. Step 3: Cross multiply
    39,357.09x = 54,312.81 × 21,451.73
  4. Step 4: Simplify right side
    39,357.09x = 1,165,103,735.66
  5. Step 5: Solve for x
    x = 1,165,103,735.66/39,357.09
  6. Step 6: Final answer
    x = 29,603.41

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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.