Home / 39,643.15-54,707.52-21,738.45

Finding the Fourth Proportional to 39,643.15, 54,707.52 and 21,738.45

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Solution

The fourth proportional to 39,643.15, 54,707.52 and 21,738.45 is: 29,999.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,643.15 : 54,707.52 = 21,738.45 : x
  2. Step 2: Convert to fraction form
    39,643.15/54,707.52 = 21,738.45/x
  3. Step 3: Cross multiply
    39,643.15x = 54,707.52 × 21,738.45
  4. Step 4: Simplify right side
    39,643.15x = 1,189,256,414.61
  5. Step 5: Solve for x
    x = 1,189,256,414.61/39,643.15
  6. Step 6: Final answer
    x = 29,999.04

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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.