Home / 56,431.24-84,659.87-18,990.34

Finding the Fourth Proportional to 56,431.24, 84,659.87 and 18,990.34

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Solution

The fourth proportional to 56,431.24, 84,659.87 and 18,990.34 is: 28,489.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,431.24 : 84,659.87 = 18,990.34 : x
  2. Step 2: Convert to fraction form
    56,431.24/84,659.87 = 18,990.34/x
  3. Step 3: Cross multiply
    56,431.24x = 84,659.87 × 18,990.34
  4. Step 4: Simplify right side
    56,431.24x = 1,607,719,405.72
  5. Step 5: Solve for x
    x = 1,607,719,405.72/56,431.24
  6. Step 6: Final answer
    x = 28,489.88

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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.