Home / 30,612.65-45,930.51-20,844.05

Finding the Fourth Proportional to 30,612.65, 45,930.51 and 20,844.05

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Solution

The fourth proportional to 30,612.65, 45,930.51 and 20,844.05 is: 31,273.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,612.65 : 45,930.51 = 20,844.05 : x
  2. Step 2: Convert to fraction form
    30,612.65/45,930.51 = 20,844.05/x
  3. Step 3: Cross multiply
    30,612.65x = 45,930.51 × 20,844.05
  4. Step 4: Simplify right side
    30,612.65x = 957,377,617.31
  5. Step 5: Solve for x
    x = 957,377,617.31/30,612.65
  6. Step 6: Final answer
    x = 31,273.93

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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.