Home / 13,934.95-20,905.77-5,169.94

Finding the Fourth Proportional to 13,934.95, 20,905.77 and 5,169.94

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Solution

The fourth proportional to 13,934.95, 20,905.77 and 5,169.94 is: 7,756.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,934.95 : 20,905.77 = 5,169.94 : x
  2. Step 2: Convert to fraction form
    13,934.95/20,905.77 = 5,169.94/x
  3. Step 3: Cross multiply
    13,934.95x = 20,905.77 × 5,169.94
  4. Step 4: Simplify right side
    13,934.95x = 108,081,576.55
  5. Step 5: Solve for x
    x = 108,081,576.55/13,934.95
  6. Step 6: Final answer
    x = 7,756.15

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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.