Home / 18,935.78-28,369.04-15,975.43

Finding the Fourth Proportional to 18,935.78, 28,369.04 and 15,975.43

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Solution

The fourth proportional to 18,935.78, 28,369.04 and 15,975.43 is: 23,933.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,935.78 : 28,369.04 = 15,975.43 : x
  2. Step 2: Convert to fraction form
    18,935.78/28,369.04 = 15,975.43/x
  3. Step 3: Cross multiply
    18,935.78x = 28,369.04 × 15,975.43
  4. Step 4: Simplify right side
    18,935.78x = 453,207,461.89
  5. Step 5: Solve for x
    x = 453,207,461.89/18,935.78
  6. Step 6: Final answer
    x = 23,933.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.