Home / 38,731.20-57,999.60-28,816.80

Finding the Fourth Proportional to 38,731.20, 57,999.60 and 28,816.80

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Solution

The fourth proportional to 38,731.20, 57,999.60 and 28,816.80 is: 43,152.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,731.20 : 57,999.60 = 28,816.80 : x
  2. Step 2: Convert to fraction form
    38,731.20/57,999.60 = 28,816.80/x
  3. Step 3: Cross multiply
    38,731.20x = 57,999.60 × 28,816.80
  4. Step 4: Simplify right side
    38,731.20x = 1,671,362,873.28
  5. Step 5: Solve for x
    x = 1,671,362,873.28/38,731.20
  6. Step 6: Final answer
    x = 43,152.88

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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.