Home / 51,231.60-76,840.38-13,793.40

Finding the Fourth Proportional to 51,231.60, 76,840.38 and 13,793.40

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Solution

The fourth proportional to 51,231.60, 76,840.38 and 13,793.40 is: 20,688.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,231.60 : 76,840.38 = 13,793.40 : x
  2. Step 2: Convert to fraction form
    51,231.60/76,840.38 = 13,793.40/x
  3. Step 3: Cross multiply
    51,231.60x = 76,840.38 × 13,793.40
  4. Step 4: Simplify right side
    51,231.60x = 1,059,890,097.49
  5. Step 5: Solve for x
    x = 1,059,890,097.49/51,231.60
  6. Step 6: Final answer
    x = 20,688.21

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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.