Home / 12,108.75-18,152.73-4,206.30

Finding the Fourth Proportional to 12,108.75, 18,152.73 and 4,206.30

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Solution

The fourth proportional to 12,108.75, 18,152.73 and 4,206.30 is: 6,305.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,108.75 : 18,152.73 = 4,206.30 : x
  2. Step 2: Convert to fraction form
    12,108.75/18,152.73 = 4,206.30/x
  3. Step 3: Cross multiply
    12,108.75x = 18,152.73 × 4,206.30
  4. Step 4: Simplify right side
    12,108.75x = 76,355,828.20
  5. Step 5: Solve for x
    x = 76,355,828.20/12,108.75
  6. Step 6: Final answer
    x = 6,305.84

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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.