Home / 9,013.78-13,519.46-2,688.57

Finding the Fourth Proportional to 9,013.78, 13,519.46 and 2,688.57

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Solution

The fourth proportional to 9,013.78, 13,519.46 and 2,688.57 is: 4,032.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,013.78 : 13,519.46 = 2,688.57 : x
  2. Step 2: Convert to fraction form
    9,013.78/13,519.46 = 2,688.57/x
  3. Step 3: Cross multiply
    9,013.78x = 13,519.46 × 2,688.57
  4. Step 4: Simplify right side
    9,013.78x = 36,347,968.15
  5. Step 5: Solve for x
    x = 36,347,968.15/9,013.78
  6. Step 6: Final answer
    x = 4,032.49

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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.