Home / 39,782.37-54,901.08-21,878.76

Finding the Fourth Proportional to 39,782.37, 54,901.08 and 21,878.76

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Solution

The fourth proportional to 39,782.37, 54,901.08 and 21,878.76 is: 30,193.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,782.37 : 54,901.08 = 21,878.76 : x
  2. Step 2: Convert to fraction form
    39,782.37/54,901.08 = 21,878.76/x
  3. Step 3: Cross multiply
    39,782.37x = 54,901.08 × 21,878.76
  4. Step 4: Simplify right side
    39,782.37x = 1,201,167,553.06
  5. Step 5: Solve for x
    x = 1,201,167,553.06/39,782.37
  6. Step 6: Final answer
    x = 30,193.46

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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.