Home / 28,429.94-39,233.36-15,682.84

Finding the Fourth Proportional to 28,429.94, 39,233.36 and 15,682.84

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Solution

The fourth proportional to 28,429.94, 39,233.36 and 15,682.84 is: 21,642.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,429.94 : 39,233.36 = 15,682.84 : x
  2. Step 2: Convert to fraction form
    28,429.94/39,233.36 = 15,682.84/x
  3. Step 3: Cross multiply
    28,429.94x = 39,233.36 × 15,682.84
  4. Step 4: Simplify right side
    28,429.94x = 615,290,507.54
  5. Step 5: Solve for x
    x = 615,290,507.54/28,429.94
  6. Step 6: Final answer
    x = 21,642.34

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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.