Home / 39,287.47-54,216.54-21,382.47

Finding the Fourth Proportional to 39,287.47, 54,216.54 and 21,382.47

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Solution

The fourth proportional to 39,287.47, 54,216.54 and 21,382.47 is: 29,507.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,287.47 : 54,216.54 = 21,382.47 : x
  2. Step 2: Convert to fraction form
    39,287.47/54,216.54 = 21,382.47/x
  3. Step 3: Cross multiply
    39,287.47x = 54,216.54 × 21,382.47
  4. Step 4: Simplify right side
    39,287.47x = 1,159,283,540.05
  5. Step 5: Solve for x
    x = 1,159,283,540.05/39,287.47
  6. Step 6: Final answer
    x = 29,507.72

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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.