Home / 28,429.68-39,232.86-15,854.42

Finding the Fourth Proportional to 28,429.68, 39,232.86 and 15,854.42

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Solution

The fourth proportional to 28,429.68, 39,232.86 and 15,854.42 is: 21,879.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,429.68 : 39,232.86 = 15,854.42 : x
  2. Step 2: Convert to fraction form
    28,429.68/39,232.86 = 15,854.42/x
  3. Step 3: Cross multiply
    28,429.68x = 39,232.86 × 15,854.42
  4. Step 4: Simplify right side
    28,429.68x = 622,014,240.24
  5. Step 5: Solve for x
    x = 622,014,240.24/28,429.68
  6. Step 6: Final answer
    x = 21,879.04

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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.