Home / 39,697.45-54,782.35-21,792.06

Finding the Fourth Proportional to 39,697.45, 54,782.35 and 21,792.06

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Solution

The fourth proportional to 39,697.45, 54,782.35 and 21,792.06 is: 30,072.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,697.45 : 54,782.35 = 21,792.06 : x
  2. Step 2: Convert to fraction form
    39,697.45/54,782.35 = 21,792.06/x
  3. Step 3: Cross multiply
    39,697.45x = 54,782.35 × 21,792.06
  4. Step 4: Simplify right side
    39,697.45x = 1,193,820,203.66
  5. Step 5: Solve for x
    x = 1,193,820,203.66/39,697.45
  6. Step 6: Final answer
    x = 30,072.97

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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.