Home / 39,478.75-54,480.56-21,573.86

Finding the Fourth Proportional to 39,478.75, 54,480.56 and 21,573.86

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Solution

The fourth proportional to 39,478.75, 54,480.56 and 21,573.86 is: 29,771.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,478.75 : 54,480.56 = 21,573.86 : x
  2. Step 2: Convert to fraction form
    39,478.75/54,480.56 = 21,573.86/x
  3. Step 3: Cross multiply
    39,478.75x = 54,480.56 × 21,573.86
  4. Step 4: Simplify right side
    39,478.75x = 1,175,356,002.49
  5. Step 5: Solve for x
    x = 1,175,356,002.49/39,478.75
  6. Step 6: Final answer
    x = 29,771.87

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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.