Home / 28,036.43-38,690.31-15,289.64

Finding the Fourth Proportional to 28,036.43, 38,690.31 and 15,289.64

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Solution

The fourth proportional to 28,036.43, 38,690.31 and 15,289.64 is: 21,099.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,036.43 : 38,690.31 = 15,289.64 : x
  2. Step 2: Convert to fraction form
    28,036.43/38,690.31 = 15,289.64/x
  3. Step 3: Cross multiply
    28,036.43x = 38,690.31 × 15,289.64
  4. Step 4: Simplify right side
    28,036.43x = 591,560,725.54
  5. Step 5: Solve for x
    x = 591,560,725.54/28,036.43
  6. Step 6: Final answer
    x = 21,099.72

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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.