Home / 30,964-42,738.27-18,872.68

Finding the Fourth Proportional to 30,964, 42,738.27 and 18,872.68

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Solution

The fourth proportional to 30,964, 42,738.27 and 18,872.68 is: 26,049.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,964 : 42,738.27 = 18,872.68 : x
  2. Step 2: Convert to fraction form
    30,964/42,738.27 = 18,872.68/x
  3. Step 3: Cross multiply
    30,964x = 42,738.27 × 18,872.68
  4. Step 4: Simplify right side
    30,964x = 806,585,693.46
  5. Step 5: Solve for x
    x = 806,585,693.46/30,964
  6. Step 6: Final answer
    x = 26,049.14

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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.