Home / 39,390.25-54,359.20-21,485.26

Finding the Fourth Proportional to 39,390.25, 54,359.20 and 21,485.26

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Solution

The fourth proportional to 39,390.25, 54,359.20 and 21,485.26 is: 29,650.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,390.25 : 54,359.20 = 21,485.26 : x
  2. Step 2: Convert to fraction form
    39,390.25/54,359.20 = 21,485.26/x
  3. Step 3: Cross multiply
    39,390.25x = 54,359.20 × 21,485.26
  4. Step 4: Simplify right side
    39,390.25x = 1,167,921,396.67
  5. Step 5: Solve for x
    x = 1,167,921,396.67/39,390.25
  6. Step 6: Final answer
    x = 29,650.01

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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.