Home / 39,216.66-54,117.90-21,311.07

Finding the Fourth Proportional to 39,216.66, 54,117.90 and 21,311.07

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Solution

The fourth proportional to 39,216.66, 54,117.90 and 21,311.07 is: 29,408.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,216.66 : 54,117.90 = 21,311.07 : x
  2. Step 2: Convert to fraction form
    39,216.66/54,117.90 = 21,311.07/x
  3. Step 3: Cross multiply
    39,216.66x = 54,117.90 × 21,311.07
  4. Step 4: Simplify right side
    39,216.66x = 1,153,310,355.15
  5. Step 5: Solve for x
    x = 1,153,310,355.15/39,216.66
  6. Step 6: Final answer
    x = 29,408.68

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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.