Home / 28,631.32-39,511.31-15,884.75

Finding the Fourth Proportional to 28,631.32, 39,511.31 and 15,884.75

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Solution

The fourth proportional to 28,631.32, 39,511.31 and 15,884.75 is: 21,921.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,631.32 : 39,511.31 = 15,884.75 : x
  2. Step 2: Convert to fraction form
    28,631.32/39,511.31 = 15,884.75/x
  3. Step 3: Cross multiply
    28,631.32x = 39,511.31 × 15,884.75
  4. Step 4: Simplify right side
    28,631.32x = 627,627,300.88
  5. Step 5: Solve for x
    x = 627,627,300.88/28,631.32
  6. Step 6: Final answer
    x = 21,921.01

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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.