Home / 12,072,679.80-18,109,019.70-3,986,903.40

Finding the Fourth Proportional to 12,072,679.80, 18,109,019.70 and 3,986,903.40

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Solution

The fourth proportional to 12,072,679.80, 18,109,019.70 and 3,986,903.40 is: 5,980,355.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,072,679.80 : 18,109,019.70 = 3,986,903.40 : x
  2. Step 2: Convert to fraction form
    12,072,679.80/18,109,019.70 = 3,986,903.40/x
  3. Step 3: Cross multiply
    12,072,679.80x = 18,109,019.70 × 3,986,903.40
  4. Step 4: Simplify right side
    12,072,679.80x = 72,198,912,212,596.97
  5. Step 5: Solve for x
    x = 72,198,912,212,596.97/12,072,679.80
  6. Step 6: Final answer
    x = 5,980,355.10

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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.