Home / 12,121.37-18,182.28-3,801.20

Finding the Fourth Proportional to 12,121.37, 18,182.28 and 3,801.20

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Solution

The fourth proportional to 12,121.37, 18,182.28 and 3,801.20 is: 5,701.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.37 : 18,182.28 = 3,801.20 : x
  2. Step 2: Convert to fraction form
    12,121.37/18,182.28 = 3,801.20/x
  3. Step 3: Cross multiply
    12,121.37x = 18,182.28 × 3,801.20
  4. Step 4: Simplify right side
    12,121.37x = 69,114,482.74
  5. Step 5: Solve for x
    x = 69,114,482.74/12,121.37
  6. Step 6: Final answer
    x = 5,701.87

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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.