Home / 28,943,322.61-39,942,908.45-15,891,131.65

Finding the Fourth Proportional to 28,943,322.61, 39,942,908.45 and 15,891,131.65

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Solution

The fourth proportional to 28,943,322.61, 39,942,908.45 and 15,891,131.65 is: 21,930,378.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,943,322.61 : 39,942,908.45 = 15,891,131.65 : x
  2. Step 2: Convert to fraction form
    28,943,322.61/39,942,908.45 = 15,891,131.65/x
  3. Step 3: Cross multiply
    28,943,322.61x = 39,942,908.45 × 15,891,131.65
  4. Step 4: Simplify right side
    28,943,322.61x = 634,738,016,662,847.50
  5. Step 5: Solve for x
    x = 634,738,016,662,847.50/28,943,322.61
  6. Step 6: Final answer
    x = 21,930,378.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.