Home / 12,440,400.80-18,660,601.20-11,731,812.80

Finding the Fourth Proportional to 12,440,400.80, 18,660,601.20 and 11,731,812.80

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Solution

The fourth proportional to 12,440,400.80, 18,660,601.20 and 11,731,812.80 is: 17,597,719.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,440,400.80 : 18,660,601.20 = 11,731,812.80 : x
  2. Step 2: Convert to fraction form
    12,440,400.80/18,660,601.20 = 11,731,812.80/x
  3. Step 3: Cross multiply
    12,440,400.80x = 18,660,601.20 × 11,731,812.80
  4. Step 4: Simplify right side
    12,440,400.80x = 218,922,680,013,855.38
  5. Step 5: Solve for x
    x = 218,922,680,013,855.38/12,440,400.80
  6. Step 6: Final answer
    x = 17,597,719.20

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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.