Home / 39,406.94-54,380.56-21,502.08

Finding the Fourth Proportional to 39,406.94, 54,380.56 and 21,502.08

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Solution

The fourth proportional to 39,406.94, 54,380.56 and 21,502.08 is: 29,672.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,406.94 : 54,380.56 = 21,502.08 : x
  2. Step 2: Convert to fraction form
    39,406.94/54,380.56 = 21,502.08/x
  3. Step 3: Cross multiply
    39,406.94x = 54,380.56 × 21,502.08
  4. Step 4: Simplify right side
    39,406.94x = 1,169,295,151.56
  5. Step 5: Solve for x
    x = 1,169,295,151.56/39,406.94
  6. Step 6: Final answer
    x = 29,672.32

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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.