Home / 13,146,947.40-19,720,421.10-11,131,408.20

Finding the Fourth Proportional to 13,146,947.40, 19,720,421.10 and 11,131,408.20

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Solution

The fourth proportional to 13,146,947.40, 19,720,421.10 and 11,131,408.20 is: 16,697,112.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,146,947.40 : 19,720,421.10 = 11,131,408.20 : x
  2. Step 2: Convert to fraction form
    13,146,947.40/19,720,421.10 = 11,131,408.20/x
  3. Step 3: Cross multiply
    13,146,947.40x = 19,720,421.10 × 11,131,408.20
  4. Step 4: Simplify right side
    13,146,947.40x = 219,516,057,139,993.03
  5. Step 5: Solve for x
    x = 219,516,057,139,993.03/13,146,947.40
  6. Step 6: Final answer
    x = 16,697,112.30

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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.