Home / 39,291.68-54,221.37-21,386.27

Finding the Fourth Proportional to 39,291.68, 54,221.37 and 21,386.27

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Solution

The fourth proportional to 39,291.68, 54,221.37 and 21,386.27 is: 29,512.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,291.68 : 54,221.37 = 21,386.27 : x
  2. Step 2: Convert to fraction form
    39,291.68/54,221.37 = 21,386.27/x
  3. Step 3: Cross multiply
    39,291.68x = 54,221.37 × 21,386.27
  4. Step 4: Simplify right side
    39,291.68x = 1,159,592,858.59
  5. Step 5: Solve for x
    x = 1,159,592,858.59/39,291.68
  6. Step 6: Final answer
    x = 29,512.43

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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.