Home / 18,878.83-28,318.34-5,731.31

Finding the Fourth Proportional to 18,878.83, 28,318.34 and 5,731.31

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Solution

The fourth proportional to 18,878.83, 28,318.34 and 5,731.31 is: 8,597.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878.83 : 28,318.34 = 5,731.31 : x
  2. Step 2: Convert to fraction form
    18,878.83/28,318.34 = 5,731.31/x
  3. Step 3: Cross multiply
    18,878.83x = 28,318.34 × 5,731.31
  4. Step 4: Simplify right side
    18,878.83x = 162,301,270.35
  5. Step 5: Solve for x
    x = 162,301,270.35/18,878.83
  6. Step 6: Final answer
    x = 8,597.00

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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.