Home / 39,356.30-54,311.07-21,451.45

Finding the Fourth Proportional to 39,356.30, 54,311.07 and 21,451.45

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Solution

The fourth proportional to 39,356.30, 54,311.07 and 21,451.45 is: 29,602.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,356.30 : 54,311.07 = 21,451.45 : x
  2. Step 2: Convert to fraction form
    39,356.30/54,311.07 = 21,451.45/x
  3. Step 3: Cross multiply
    39,356.30x = 54,311.07 × 21,451.45
  4. Step 4: Simplify right side
    39,356.30x = 1,165,051,202.55
  5. Step 5: Solve for x
    x = 1,165,051,202.55/39,356.30
  6. Step 6: Final answer
    x = 29,602.66

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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.