Home / 28,820.70-43,235.51-12,180.80

Finding the Fourth Proportional to 28,820.70, 43,235.51 and 12,180.80

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Solution

The fourth proportional to 28,820.70, 43,235.51 and 12,180.80 is: 18,273.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,820.70 : 43,235.51 = 12,180.80 : x
  2. Step 2: Convert to fraction form
    28,820.70/43,235.51 = 12,180.80/x
  3. Step 3: Cross multiply
    28,820.70x = 43,235.51 × 12,180.80
  4. Step 4: Simplify right side
    28,820.70x = 526,643,100.21
  5. Step 5: Solve for x
    x = 526,643,100.21/28,820.70
  6. Step 6: Final answer
    x = 18,273.08

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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.