Home / 13,935.84-20,911.92-5,176.80

Finding the Fourth Proportional to 13,935.84, 20,911.92 and 5,176.80

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Solution

The fourth proportional to 13,935.84, 20,911.92 and 5,176.80 is: 7,768.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,935.84 : 20,911.92 = 5,176.80 : x
  2. Step 2: Convert to fraction form
    13,935.84/20,911.92 = 5,176.80/x
  3. Step 3: Cross multiply
    13,935.84x = 20,911.92 × 5,176.80
  4. Step 4: Simplify right side
    13,935.84x = 108,256,827.46
  5. Step 5: Solve for x
    x = 108,256,827.46/13,935.84
  6. Step 6: Final answer
    x = 7,768.23

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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.