Home / 12,445,709.80-18,631,239.90-7,394,420.20

Finding the Fourth Proportional to 12,445,709.80, 18,631,239.90 and 7,394,420.20

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Solution

The fourth proportional to 12,445,709.80, 18,631,239.90 and 7,394,420.20 is: 11,069,454.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,445,709.80 : 18,631,239.90 = 7,394,420.20 : x
  2. Step 2: Convert to fraction form
    12,445,709.80/18,631,239.90 = 7,394,420.20/x
  3. Step 3: Cross multiply
    12,445,709.80x = 18,631,239.90 × 7,394,420.20
  4. Step 4: Simplify right side
    12,445,709.80x = 137,767,216,667,605.97
  5. Step 5: Solve for x
    x = 137,767,216,667,605.97/12,445,709.80
  6. Step 6: Final answer
    x = 11,069,454.36

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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.