Home / 12,215.80-18,318.23-4,816.45

Finding the Fourth Proportional to 12,215.80, 18,318.23 and 4,816.45

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Solution

The fourth proportional to 12,215.80, 18,318.23 and 4,816.45 is: 7,222.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.80 : 18,318.23 = 4,816.45 : x
  2. Step 2: Convert to fraction form
    12,215.80/18,318.23 = 4,816.45/x
  3. Step 3: Cross multiply
    12,215.80x = 18,318.23 × 4,816.45
  4. Step 4: Simplify right side
    12,215.80x = 88,228,838.88
  5. Step 5: Solve for x
    x = 88,228,838.88/12,215.80
  6. Step 6: Final answer
    x = 7,222.52

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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.