Home / 20,929,328.58-28,864,488.33-13,579,919.94

Finding the Fourth Proportional to 20,929,328.58, 28,864,488.33 and 13,579,919.94

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Solution

The fourth proportional to 20,929,328.58, 28,864,488.33 and 13,579,919.94 is: 18,728,619.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929,328.58 : 28,864,488.33 = 13,579,919.94 : x
  2. Step 2: Convert to fraction form
    20,929,328.58/28,864,488.33 = 13,579,919.94/x
  3. Step 3: Cross multiply
    20,929,328.58x = 28,864,488.33 × 13,579,919.94
  4. Step 4: Simplify right side
    20,929,328.58x = 391,977,440,630,464.25
  5. Step 5: Solve for x
    x = 391,977,440,630,464.25/20,929,328.58
  6. Step 6: Final answer
    x = 18,728,619.94

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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.