Home / 28,418.52-39,216.12-15,673.92

Finding the Fourth Proportional to 28,418.52, 39,216.12 and 15,673.92

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Solution

The fourth proportional to 28,418.52, 39,216.12 and 15,673.92 is: 21,629.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,418.52 : 39,216.12 = 15,673.92 : x
  2. Step 2: Convert to fraction form
    28,418.52/39,216.12 = 15,673.92/x
  3. Step 3: Cross multiply
    28,418.52x = 39,216.12 × 15,673.92
  4. Step 4: Simplify right side
    28,418.52x = 614,670,327.59
  5. Step 5: Solve for x
    x = 614,670,327.59/28,418.52
  6. Step 6: Final answer
    x = 21,629.22

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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.