Home / 12,315.40-18,476.03-3,995.43

Finding the Fourth Proportional to 12,315.40, 18,476.03 and 3,995.43

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Solution

The fourth proportional to 12,315.40, 18,476.03 and 3,995.43 is: 5,994.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,315.40 : 18,476.03 = 3,995.43 : x
  2. Step 2: Convert to fraction form
    12,315.40/18,476.03 = 3,995.43/x
  3. Step 3: Cross multiply
    12,315.40x = 18,476.03 × 3,995.43
  4. Step 4: Simplify right side
    12,315.40x = 73,819,706.70
  5. Step 5: Solve for x
    x = 73,819,706.70/12,315.40
  6. Step 6: Final answer
    x = 5,994.10

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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.