Home / 28,276.90-39,022.56-15,529.73

Finding the Fourth Proportional to 28,276.90, 39,022.56 and 15,529.73

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Solution

The fourth proportional to 28,276.90, 39,022.56 and 15,529.73 is: 21,431.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,276.90 : 39,022.56 = 15,529.73 : x
  2. Step 2: Convert to fraction form
    28,276.90/39,022.56 = 15,529.73/x
  3. Step 3: Cross multiply
    28,276.90x = 39,022.56 × 15,529.73
  4. Step 4: Simplify right side
    28,276.90x = 606,009,625.60
  5. Step 5: Solve for x
    x = 606,009,625.60/28,276.90
  6. Step 6: Final answer
    x = 21,431.26

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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.