Home / 28,199.74-38,913.96-15,450.38

Finding the Fourth Proportional to 28,199.74, 38,913.96 and 15,450.38

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Solution

The fourth proportional to 28,199.74, 38,913.96 and 15,450.38 is: 21,320.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,199.74 : 38,913.96 = 15,450.38 : x
  2. Step 2: Convert to fraction form
    28,199.74/38,913.96 = 15,450.38/x
  3. Step 3: Cross multiply
    28,199.74x = 38,913.96 × 15,450.38
  4. Step 4: Simplify right side
    28,199.74x = 601,235,469.30
  5. Step 5: Solve for x
    x = 601,235,469.30/28,199.74
  6. Step 6: Final answer
    x = 21,320.60

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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.