Home / 11,271.57-15,549.87-6,792.78

Finding the Fourth Proportional to 11,271.57, 15,549.87 and 6,792.78

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Solution

The fourth proportional to 11,271.57, 15,549.87 and 6,792.78 is: 9,371.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,271.57 : 15,549.87 = 6,792.78 : x
  2. Step 2: Convert to fraction form
    11,271.57/15,549.87 = 6,792.78/x
  3. Step 3: Cross multiply
    11,271.57x = 15,549.87 × 6,792.78
  4. Step 4: Simplify right side
    11,271.57x = 105,626,845.94
  5. Step 5: Solve for x
    x = 105,626,845.94/11,271.57
  6. Step 6: Final answer
    x = 9,371.09

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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.