Home / 28,657.20-42,996.60-13,879.20

Finding the Fourth Proportional to 28,657.20, 42,996.60 and 13,879.20

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Solution

The fourth proportional to 28,657.20, 42,996.60 and 13,879.20 is: 20,824.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,657.20 : 42,996.60 = 13,879.20 : x
  2. Step 2: Convert to fraction form
    28,657.20/42,996.60 = 13,879.20/x
  3. Step 3: Cross multiply
    28,657.20x = 42,996.60 × 13,879.20
  4. Step 4: Simplify right side
    28,657.20x = 596,758,410.72
  5. Step 5: Solve for x
    x = 596,758,410.72/28,657.20
  6. Step 6: Final answer
    x = 20,824.03

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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.