Home / 39,240.10-54,149.86-21,334.49

Finding the Fourth Proportional to 39,240.10, 54,149.86 and 21,334.49

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Solution

The fourth proportional to 39,240.10, 54,149.86 and 21,334.49 is: 29,440.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,240.10 : 54,149.86 = 21,334.49 : x
  2. Step 2: Convert to fraction form
    39,240.10/54,149.86 = 21,334.49/x
  3. Step 3: Cross multiply
    39,240.10x = 54,149.86 × 21,334.49
  4. Step 4: Simplify right side
    39,240.10x = 1,155,259,646.67
  5. Step 5: Solve for x
    x = 1,155,259,646.67/39,240.10
  6. Step 6: Final answer
    x = 29,440.79

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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.