Home / 39,815.85-54,946.59-21,910.69

Finding the Fourth Proportional to 39,815.85, 54,946.59 and 21,910.69

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Solution

The fourth proportional to 39,815.85, 54,946.59 and 21,910.69 is: 30,237.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,815.85 : 54,946.59 = 21,910.69 : x
  2. Step 2: Convert to fraction form
    39,815.85/54,946.59 = 21,910.69/x
  3. Step 3: Cross multiply
    39,815.85x = 54,946.59 × 21,910.69
  4. Step 4: Simplify right side
    39,815.85x = 1,203,917,590.49
  5. Step 5: Solve for x
    x = 1,203,917,590.49/39,815.85
  6. Step 6: Final answer
    x = 30,237.14

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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.