Home / 20,775,659.20-31,163,488.80-13,122,908.80

Finding the Fourth Proportional to 20,775,659.20, 31,163,488.80 and 13,122,908.80

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Solution

The fourth proportional to 20,775,659.20, 31,163,488.80 and 13,122,908.80 is: 19,684,363.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775,659.20 : 31,163,488.80 = 13,122,908.80 : x
  2. Step 2: Convert to fraction form
    20,775,659.20/31,163,488.80 = 13,122,908.80/x
  3. Step 3: Cross multiply
    20,775,659.20x = 31,163,488.80 × 13,122,908.80
  4. Step 4: Simplify right side
    20,775,659.20x = 408,955,621,412,221.50
  5. Step 5: Solve for x
    x = 408,955,621,412,221.50/20,775,659.20
  6. Step 6: Final answer
    x = 19,684,363.20

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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.