Home / 20,617,698.36-28,450,764.45-11,916,434.55

Finding the Fourth Proportional to 20,617,698.36, 28,450,764.45 and 11,916,434.55

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Solution

The fourth proportional to 20,617,698.36, 28,450,764.45 and 11,916,434.55 is: 16,443,720.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617,698.36 : 28,450,764.45 = 11,916,434.55 : x
  2. Step 2: Convert to fraction form
    20,617,698.36/28,450,764.45 = 11,916,434.55/x
  3. Step 3: Cross multiply
    20,617,698.36x = 28,450,764.45 × 11,916,434.55
  4. Step 4: Simplify right side
    20,617,698.36x = 339,031,672,465,891.75
  5. Step 5: Solve for x
    x = 339,031,672,465,891.75/20,617,698.36
  6. Step 6: Final answer
    x = 16,443,720.66

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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.