Home / 57,853.48-86,794.07-20,421.96

Finding the Fourth Proportional to 57,853.48, 86,794.07 and 20,421.96

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Solution

The fourth proportional to 57,853.48, 86,794.07 and 20,421.96 is: 30,637.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,853.48 : 86,794.07 = 20,421.96 : x
  2. Step 2: Convert to fraction form
    57,853.48/86,794.07 = 20,421.96/x
  3. Step 3: Cross multiply
    57,853.48x = 86,794.07 × 20,421.96
  4. Step 4: Simplify right side
    57,853.48x = 1,772,505,025.78
  5. Step 5: Solve for x
    x = 1,772,505,025.78/57,853.48
  6. Step 6: Final answer
    x = 30,637.83

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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.