Home / 12,551,471.40-18,809,408.06-5,257,072.68

Finding the Fourth Proportional to 12,551,471.40, 18,809,408.06 and 5,257,072.68

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Solution

The fourth proportional to 12,551,471.40, 18,809,408.06 and 5,257,072.68 is: 7,878,154.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,551,471.40 : 18,809,408.06 = 5,257,072.68 : x
  2. Step 2: Convert to fraction form
    12,551,471.40/18,809,408.06 = 5,257,072.68/x
  3. Step 3: Cross multiply
    12,551,471.40x = 18,809,408.06 × 5,257,072.68
  4. Step 4: Simplify right side
    12,551,471.40x = 98,882,425,239,197.78
  5. Step 5: Solve for x
    x = 98,882,425,239,197.78/12,551,471.40
  6. Step 6: Final answer
    x = 7,878,154.05

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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.