Home / 30,645.30-42,288.90-17,217.12

Finding the Fourth Proportional to 30,645.30, 42,288.90 and 17,217.12

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Solution

The fourth proportional to 30,645.30, 42,288.90 and 17,217.12 is: 23,758.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,645.30 : 42,288.90 = 17,217.12 : x
  2. Step 2: Convert to fraction form
    30,645.30/42,288.90 = 17,217.12/x
  3. Step 3: Cross multiply
    30,645.30x = 42,288.90 × 17,217.12
  4. Step 4: Simplify right side
    30,645.30x = 728,093,065.97
  5. Step 5: Solve for x
    x = 728,093,065.97/30,645.30
  6. Step 6: Final answer
    x = 23,758.72

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1.5x scale

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.