Home / 13,207,947.20-19,811,920.80-7,539,243.20

Finding the Fourth Proportional to 13,207,947.20, 19,811,920.80 and 7,539,243.20

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Solution

The fourth proportional to 13,207,947.20, 19,811,920.80 and 7,539,243.20 is: 11,308,864.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207,947.20 : 19,811,920.80 = 7,539,243.20 : x
  2. Step 2: Convert to fraction form
    13,207,947.20/19,811,920.80 = 7,539,243.20/x
  3. Step 3: Cross multiply
    13,207,947.20x = 19,811,920.80 × 7,539,243.20
  4. Step 4: Simplify right side
    13,207,947.20x = 149,366,889,170,338.56
  5. Step 5: Solve for x
    x = 149,366,889,170,338.56/13,207,947.20
  6. Step 6: Final answer
    x = 11,308,864.80

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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.