Home / 39,287.21-54,216.18-21,382.34

Finding the Fourth Proportional to 39,287.21, 54,216.18 and 21,382.34

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Solution

The fourth proportional to 39,287.21, 54,216.18 and 21,382.34 is: 29,507.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,287.21 : 54,216.18 = 21,382.34 : x
  2. Step 2: Convert to fraction form
    39,287.21/54,216.18 = 21,382.34/x
  3. Step 3: Cross multiply
    39,287.21x = 54,216.18 × 21,382.34
  4. Step 4: Simplify right side
    39,287.21x = 1,159,268,523.18
  5. Step 5: Solve for x
    x = 1,159,268,523.18/39,287.21
  6. Step 6: Final answer
    x = 29,507.53

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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.