Home / 16,971.20-25,454.40-5,285.60

Finding the Fourth Proportional to 16,971.20, 25,454.40 and 5,285.60

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Solution

The fourth proportional to 16,971.20, 25,454.40 and 5,285.60 is: 7,927.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,971.20 : 25,454.40 = 5,285.60 : x
  2. Step 2: Convert to fraction form
    16,971.20/25,454.40 = 5,285.60/x
  3. Step 3: Cross multiply
    16,971.20x = 25,454.40 × 5,285.60
  4. Step 4: Simplify right side
    16,971.20x = 134,541,776.64
  5. Step 5: Solve for x
    x = 134,541,776.64/16,971.20
  6. Step 6: Final answer
    x = 7,927.65

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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.