Home / 12,315.88-18,474.54-3,995.92

Finding the Fourth Proportional to 12,315.88, 18,474.54 and 3,995.92

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Solution

The fourth proportional to 12,315.88, 18,474.54 and 3,995.92 is: 5,994.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,315.88 : 18,474.54 = 3,995.92 : x
  2. Step 2: Convert to fraction form
    12,315.88/18,474.54 = 3,995.92/x
  3. Step 3: Cross multiply
    12,315.88x = 18,474.54 × 3,995.92
  4. Step 4: Simplify right side
    12,315.88x = 73,822,783.88
  5. Step 5: Solve for x
    x = 73,822,783.88/12,315.88
  6. Step 6: Final answer
    x = 5,994.11

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1.5x scale

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.