Home / 28,369.84-39,147.96-15,795.76

Finding the Fourth Proportional to 28,369.84, 39,147.96 and 15,795.76

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Solution

The fourth proportional to 28,369.84, 39,147.96 and 15,795.76 is: 21,796.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,369.84 : 39,147.96 = 15,795.76 : x
  2. Step 2: Convert to fraction form
    28,369.84/39,147.96 = 15,795.76/x
  3. Step 3: Cross multiply
    28,369.84x = 39,147.96 × 15,795.76
  4. Step 4: Simplify right side
    28,369.84x = 618,371,780.65
  5. Step 5: Solve for x
    x = 618,371,780.65/28,369.84
  6. Step 6: Final answer
    x = 21,796.80

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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.