Home / 39,163.36-54,043.88-21,257.76

Finding the Fourth Proportional to 39,163.36, 54,043.88 and 21,257.76

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Solution

The fourth proportional to 39,163.36, 54,043.88 and 21,257.76 is: 29,334.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,163.36 : 54,043.88 = 21,257.76 : x
  2. Step 2: Convert to fraction form
    39,163.36/54,043.88 = 21,257.76/x
  3. Step 3: Cross multiply
    39,163.36x = 54,043.88 × 21,257.76
  4. Step 4: Simplify right side
    39,163.36x = 1,148,851,830.51
  5. Step 5: Solve for x
    x = 1,148,851,830.51/39,163.36
  6. Step 6: Final answer
    x = 29,334.86

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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.