Home / 39,792.57-54,913.64-21,887.79

Finding the Fourth Proportional to 39,792.57, 54,913.64 and 21,887.79

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Solution

The fourth proportional to 39,792.57, 54,913.64 and 21,887.79 is: 30,205.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,792.57 : 54,913.64 = 21,887.79 : x
  2. Step 2: Convert to fraction form
    39,792.57/54,913.64 = 21,887.79/x
  3. Step 3: Cross multiply
    39,792.57x = 54,913.64 × 21,887.79
  4. Step 4: Simplify right side
    39,792.57x = 1,201,938,111.02
  5. Step 5: Solve for x
    x = 1,201,938,111.02/39,792.57
  6. Step 6: Final answer
    x = 30,205.09

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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.