Home / 12,075.10-18,121.65-6,228.70

Finding the Fourth Proportional to 12,075.10, 18,121.65 and 6,228.70

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Solution

The fourth proportional to 12,075.10, 18,121.65 and 6,228.70 is: 9,347.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,075.10 : 18,121.65 = 6,228.70 : x
  2. Step 2: Convert to fraction form
    12,075.10/18,121.65 = 6,228.70/x
  3. Step 3: Cross multiply
    12,075.10x = 18,121.65 × 6,228.70
  4. Step 4: Simplify right side
    12,075.10x = 112,874,321.36
  5. Step 5: Solve for x
    x = 112,874,321.36/12,075.10
  6. Step 6: Final answer
    x = 9,347.69

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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.