Home / 18,878.24-28,321.48-5,731.60

Finding the Fourth Proportional to 18,878.24, 28,321.48 and 5,731.60

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Solution

The fourth proportional to 18,878.24, 28,321.48 and 5,731.60 is: 8,598.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878.24 : 28,321.48 = 5,731.60 : x
  2. Step 2: Convert to fraction form
    18,878.24/28,321.48 = 5,731.60/x
  3. Step 3: Cross multiply
    18,878.24x = 28,321.48 × 5,731.60
  4. Step 4: Simplify right side
    18,878.24x = 162,327,394.77
  5. Step 5: Solve for x
    x = 162,327,394.77/18,878.24
  6. Step 6: Final answer
    x = 8,598.65

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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.