Home / 13,913.02-20,871.96-6,121.63

Finding the Fourth Proportional to 13,913.02, 20,871.96 and 6,121.63

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Solution

The fourth proportional to 13,913.02, 20,871.96 and 6,121.63 is: 9,183.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,913.02 : 20,871.96 = 6,121.63 : x
  2. Step 2: Convert to fraction form
    13,913.02/20,871.96 = 6,121.63/x
  3. Step 3: Cross multiply
    13,913.02x = 20,871.96 × 6,121.63
  4. Step 4: Simplify right side
    13,913.02x = 127,770,281.53
  5. Step 5: Solve for x
    x = 127,770,281.53/13,913.02
  6. Step 6: Final answer
    x = 9,183.51

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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.