Home / 30,309.20-45,345-19,941.20

Finding the Fourth Proportional to 30,309.20, 45,345 and 19,941.20

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Solution

The fourth proportional to 30,309.20, 45,345 and 19,941.20 is: 29,833.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,309.20 : 45,345 = 19,941.20 : x
  2. Step 2: Convert to fraction form
    30,309.20/45,345 = 19,941.20/x
  3. Step 3: Cross multiply
    30,309.20x = 45,345 × 19,941.20
  4. Step 4: Simplify right side
    30,309.20x = 904,233,714
  5. Step 5: Solve for x
    x = 904,233,714/30,309.20
  6. Step 6: Final answer
    x = 29,833.64

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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.