Home / 28,848.40-43,272.60-11,318.80

Finding the Fourth Proportional to 28,848.40, 43,272.60 and 11,318.80

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Solution

The fourth proportional to 28,848.40, 43,272.60 and 11,318.80 is: 16,978.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,848.40 : 43,272.60 = 11,318.80 : x
  2. Step 2: Convert to fraction form
    28,848.40/43,272.60 = 11,318.80/x
  3. Step 3: Cross multiply
    28,848.40x = 43,272.60 × 11,318.80
  4. Step 4: Simplify right side
    28,848.40x = 489,793,904.88
  5. Step 5: Solve for x
    x = 489,793,904.88/28,848.40
  6. Step 6: Final answer
    x = 16,978.20

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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.