Home / 12,318.68-18,478.73-8,368.25

Finding the Fourth Proportional to 12,318.68, 18,478.73 and 8,368.25

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Solution

The fourth proportional to 12,318.68, 18,478.73 and 8,368.25 is: 12,552.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318.68 : 18,478.73 = 8,368.25 : x
  2. Step 2: Convert to fraction form
    12,318.68/18,478.73 = 8,368.25/x
  3. Step 3: Cross multiply
    12,318.68x = 18,478.73 × 8,368.25
  4. Step 4: Simplify right side
    12,318.68x = 154,634,560.85
  5. Step 5: Solve for x
    x = 154,634,560.85/12,318.68
  6. Step 6: Final answer
    x = 12,552.85

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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.