Home / 13,712.20-18,953.94-12,623.56

Finding the Fourth Proportional to 13,712.20, 18,953.94 and 12,623.56

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Solution

The fourth proportional to 13,712.20, 18,953.94 and 12,623.56 is: 17,449.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,712.20 : 18,953.94 = 12,623.56 : x
  2. Step 2: Convert to fraction form
    13,712.20/18,953.94 = 12,623.56/x
  3. Step 3: Cross multiply
    13,712.20x = 18,953.94 × 12,623.56
  4. Step 4: Simplify right side
    13,712.20x = 239,266,198.83
  5. Step 5: Solve for x
    x = 239,266,198.83/13,712.20
  6. Step 6: Final answer
    x = 17,449.15

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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.