Home / 30,317.76-41,844.96-20,376

Finding the Fourth Proportional to 30,317.76, 41,844.96 and 20,376

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Solution

The fourth proportional to 30,317.76, 41,844.96 and 20,376 is: 28,123.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,317.76 : 41,844.96 = 20,376 : x
  2. Step 2: Convert to fraction form
    30,317.76/41,844.96 = 20,376/x
  3. Step 3: Cross multiply
    30,317.76x = 41,844.96 × 20,376
  4. Step 4: Simplify right side
    30,317.76x = 852,632,904.96
  5. Step 5: Solve for x
    x = 852,632,904.96/30,317.76
  6. Step 6: Final answer
    x = 28,123.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.