Home / 18,821.30-25,973.91-10,863.95

Finding the Fourth Proportional to 18,821.30, 25,973.91 and 10,863.95

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Solution

The fourth proportional to 18,821.30, 25,973.91 and 10,863.95 is: 14,992.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,821.30 : 25,973.91 = 10,863.95 : x
  2. Step 2: Convert to fraction form
    18,821.30/25,973.91 = 10,863.95/x
  3. Step 3: Cross multiply
    18,821.30x = 25,973.91 × 10,863.95
  4. Step 4: Simplify right side
    18,821.30x = 282,179,129.67
  5. Step 5: Solve for x
    x = 282,179,129.67/18,821.30
  6. Step 6: Final answer
    x = 14,992.55

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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.