Home / 28,209.94-38,930.93-15,634.69

Finding the Fourth Proportional to 28,209.94, 38,930.93 and 15,634.69

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Solution

The fourth proportional to 28,209.94, 38,930.93 and 15,634.69 is: 21,576.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,209.94 : 38,930.93 = 15,634.69 : x
  2. Step 2: Convert to fraction form
    28,209.94/38,930.93 = 15,634.69/x
  3. Step 3: Cross multiply
    28,209.94x = 38,930.93 × 15,634.69
  4. Step 4: Simplify right side
    28,209.94x = 608,672,905.09
  5. Step 5: Solve for x
    x = 608,672,905.09/28,209.94
  6. Step 6: Final answer
    x = 21,576.54

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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.