Home / 12,291,472.80-18,437,209.20-11,819,080.80

Finding the Fourth Proportional to 12,291,472.80, 18,437,209.20 and 11,819,080.80

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Solution

The fourth proportional to 12,291,472.80, 18,437,209.20 and 11,819,080.80 is: 17,728,621.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,291,472.80 : 18,437,209.20 = 11,819,080.80 : x
  2. Step 2: Convert to fraction form
    12,291,472.80/18,437,209.20 = 11,819,080.80/x
  3. Step 3: Cross multiply
    12,291,472.80x = 18,437,209.20 × 11,819,080.80
  4. Step 4: Simplify right side
    12,291,472.80x = 217,910,865,261,303.38
  5. Step 5: Solve for x
    x = 217,910,865,261,303.38/12,291,472.80
  6. Step 6: Final answer
    x = 17,728,621.20

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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.