Home / 39,390.09-54,358.49-21,485.48

Finding the Fourth Proportional to 39,390.09, 54,358.49 and 21,485.48

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Solution

The fourth proportional to 39,390.09, 54,358.49 and 21,485.48 is: 29,650.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,390.09 : 54,358.49 = 21,485.48 : x
  2. Step 2: Convert to fraction form
    39,390.09/54,358.49 = 21,485.48/x
  3. Step 3: Cross multiply
    39,390.09x = 54,358.49 × 21,485.48
  4. Step 4: Simplify right side
    39,390.09x = 1,167,917,924.22
  5. Step 5: Solve for x
    x = 1,167,917,924.22/39,390.09
  6. Step 6: Final answer
    x = 29,650.05

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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.