Home / 12,811,921.40-19,208,040.60-6,426,756.20

Finding the Fourth Proportional to 12,811,921.40, 19,208,040.60 and 6,426,756.20

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Solution

The fourth proportional to 12,811,921.40, 19,208,040.60 and 6,426,756.20 is: 9,635,197.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,811,921.40 : 19,208,040.60 = 6,426,756.20 : x
  2. Step 2: Convert to fraction form
    12,811,921.40/19,208,040.60 = 6,426,756.20/x
  3. Step 3: Cross multiply
    12,811,921.40x = 19,208,040.60 × 6,426,756.20
  4. Step 4: Simplify right side
    12,811,921.40x = 123,445,394,015,901.73
  5. Step 5: Solve for x
    x = 123,445,394,015,901.73/12,811,921.40
  6. Step 6: Final answer
    x = 9,635,197.58

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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.