Home / 28,455.96-39,272.94-15,883.32

Finding the Fourth Proportional to 28,455.96, 39,272.94 and 15,883.32

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Solution

The fourth proportional to 28,455.96, 39,272.94 and 15,883.32 is: 21,921.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,455.96 : 39,272.94 = 15,883.32 : x
  2. Step 2: Convert to fraction form
    28,455.96/39,272.94 = 15,883.32/x
  3. Step 3: Cross multiply
    28,455.96x = 39,272.94 × 15,883.32
  4. Step 4: Simplify right side
    28,455.96x = 623,784,673.36
  5. Step 5: Solve for x
    x = 623,784,673.36/28,455.96
  6. Step 6: Final answer
    x = 21,921.06

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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.