Home / 19,782.12-29,652.32-13,540.46

Finding the Fourth Proportional to 19,782.12, 29,652.32 and 13,540.46

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Solution

The fourth proportional to 19,782.12, 29,652.32 and 13,540.46 is: 20,296.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,782.12 : 29,652.32 = 13,540.46 : x
  2. Step 2: Convert to fraction form
    19,782.12/29,652.32 = 13,540.46/x
  3. Step 3: Cross multiply
    19,782.12x = 29,652.32 × 13,540.46
  4. Step 4: Simplify right side
    19,782.12x = 401,506,052.87
  5. Step 5: Solve for x
    x = 401,506,052.87/19,782.12
  6. Step 6: Final answer
    x = 20,296.41

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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.