Home / 39,355.74-54,311.78-21,451.64

Finding the Fourth Proportional to 39,355.74, 54,311.78 and 21,451.64

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Solution

The fourth proportional to 39,355.74, 54,311.78 and 21,451.64 is: 29,603.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,355.74 : 54,311.78 = 21,451.64 : x
  2. Step 2: Convert to fraction form
    39,355.74/54,311.78 = 21,451.64/x
  3. Step 3: Cross multiply
    39,355.74x = 54,311.78 × 21,451.64
  4. Step 4: Simplify right side
    39,355.74x = 1,165,076,534.39
  5. Step 5: Solve for x
    x = 1,165,076,534.39/39,355.74
  6. Step 6: Final answer
    x = 29,603.73

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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.