Home / 39,633.32-54,693.97-21,728.45

Finding the Fourth Proportional to 39,633.32, 54,693.97 and 21,728.45

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Solution

The fourth proportional to 39,633.32, 54,693.97 and 21,728.45 is: 29,985.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,633.32 : 54,693.97 = 21,728.45 : x
  2. Step 2: Convert to fraction form
    39,633.32/54,693.97 = 21,728.45/x
  3. Step 3: Cross multiply
    39,633.32x = 54,693.97 × 21,728.45
  4. Step 4: Simplify right side
    39,633.32x = 1,188,415,089.43
  5. Step 5: Solve for x
    x = 1,188,415,089.43/39,633.32
  6. Step 6: Final answer
    x = 29,985.25

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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.