Home / 39,410.02-54,385.97-21,505.42

Finding the Fourth Proportional to 39,410.02, 54,385.97 and 21,505.42

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Solution

The fourth proportional to 39,410.02, 54,385.97 and 21,505.42 is: 29,677.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,410.02 : 54,385.97 = 21,505.42 : x
  2. Step 2: Convert to fraction form
    39,410.02/54,385.97 = 21,505.42/x
  3. Step 3: Cross multiply
    39,410.02x = 54,385.97 × 21,505.42
  4. Step 4: Simplify right side
    39,410.02x = 1,169,593,019.43
  5. Step 5: Solve for x
    x = 1,169,593,019.43/39,410.02
  6. Step 6: Final answer
    x = 29,677.55

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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.