Home / 12,154.80-18,239.40-8,006.70

Finding the Fourth Proportional to 12,154.80, 18,239.40 and 8,006.70

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Solution

The fourth proportional to 12,154.80, 18,239.40 and 8,006.70 is: 12,014.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,154.80 : 18,239.40 = 8,006.70 : x
  2. Step 2: Convert to fraction form
    12,154.80/18,239.40 = 8,006.70/x
  3. Step 3: Cross multiply
    12,154.80x = 18,239.40 × 8,006.70
  4. Step 4: Simplify right side
    12,154.80x = 146,037,403.98
  5. Step 5: Solve for x
    x = 146,037,403.98/12,154.80
  6. Step 6: Final answer
    x = 12,014.79

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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.