Home / 39,639.03-54,701.85-21,735.69

Finding the Fourth Proportional to 39,639.03, 54,701.85 and 21,735.69

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Solution

The fourth proportional to 39,639.03, 54,701.85 and 21,735.69 is: 29,995.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,639.03 : 54,701.85 = 21,735.69 : x
  2. Step 2: Convert to fraction form
    39,639.03/54,701.85 = 21,735.69/x
  3. Step 3: Cross multiply
    39,639.03x = 54,701.85 × 21,735.69
  4. Step 4: Simplify right side
    39,639.03x = 1,188,982,454.03
  5. Step 5: Solve for x
    x = 1,188,982,454.03/39,639.03
  6. Step 6: Final answer
    x = 29,995.25

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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.