Home / 12,176.12-18,272.37-4,779.70

Finding the Fourth Proportional to 12,176.12, 18,272.37 and 4,779.70

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Solution

The fourth proportional to 12,176.12, 18,272.37 and 4,779.70 is: 7,172.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,176.12 : 18,272.37 = 4,779.70 : x
  2. Step 2: Convert to fraction form
    12,176.12/18,272.37 = 4,779.70/x
  3. Step 3: Cross multiply
    12,176.12x = 18,272.37 × 4,779.70
  4. Step 4: Simplify right side
    12,176.12x = 87,336,355.53
  5. Step 5: Solve for x
    x = 87,336,355.53/12,176.12
  6. Step 6: Final answer
    x = 7,172.76

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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.