Home / 39,775.48-54,890.37-21,871.64

Finding the Fourth Proportional to 39,775.48, 54,890.37 and 21,871.64

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Solution

The fourth proportional to 39,775.48, 54,890.37 and 21,871.64 is: 30,182.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,775.48 : 54,890.37 = 21,871.64 : x
  2. Step 2: Convert to fraction form
    39,775.48/54,890.37 = 21,871.64/x
  3. Step 3: Cross multiply
    39,775.48x = 54,890.37 × 21,871.64
  4. Step 4: Simplify right side
    39,775.48x = 1,200,542,412.11
  5. Step 5: Solve for x
    x = 1,200,542,412.11/39,775.48
  6. Step 6: Final answer
    x = 30,182.98

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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.