Home / 30,564.75-42,165.99-21,619.92

Finding the Fourth Proportional to 30,564.75, 42,165.99 and 21,619.92

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Solution

The fourth proportional to 30,564.75, 42,165.99 and 21,619.92 is: 29,826.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,564.75 : 42,165.99 = 21,619.92 : x
  2. Step 2: Convert to fraction form
    30,564.75/42,165.99 = 21,619.92/x
  3. Step 3: Cross multiply
    30,564.75x = 42,165.99 × 21,619.92
  4. Step 4: Simplify right side
    30,564.75x = 911,625,330.52
  5. Step 5: Solve for x
    x = 911,625,330.52/30,564.75
  6. Step 6: Final answer
    x = 29,826.04

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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.