Home / 39,673.76-54,749.75-21,768.80

Finding the Fourth Proportional to 39,673.76, 54,749.75 and 21,768.80

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Solution

The fourth proportional to 39,673.76, 54,749.75 and 21,768.80 is: 30,040.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,673.76 : 54,749.75 = 21,768.80 : x
  2. Step 2: Convert to fraction form
    39,673.76/54,749.75 = 21,768.80/x
  3. Step 3: Cross multiply
    39,673.76x = 54,749.75 × 21,768.80
  4. Step 4: Simplify right side
    39,673.76x = 1,191,835,975.21
  5. Step 5: Solve for x
    x = 1,191,835,975.21/39,673.76
  6. Step 6: Final answer
    x = 30,040.92

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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.