Home / 30,118.11-45,246.41-21,253.84

Finding the Fourth Proportional to 30,118.11, 45,246.41 and 21,253.84

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Solution

The fourth proportional to 30,118.11, 45,246.41 and 21,253.84 is: 31,929.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,118.11 : 45,246.41 = 21,253.84 : x
  2. Step 2: Convert to fraction form
    30,118.11/45,246.41 = 21,253.84/x
  3. Step 3: Cross multiply
    30,118.11x = 45,246.41 × 21,253.84
  4. Step 4: Simplify right side
    30,118.11x = 961,659,958.71
  5. Step 5: Solve for x
    x = 961,659,958.71/30,118.11
  6. Step 6: Final answer
    x = 31,929.63

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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.