Home / 21,620,819.72-29,837,317.36-13,248,044.68

Finding the Fourth Proportional to 21,620,819.72, 29,837,317.36 and 13,248,044.68

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Solution

The fourth proportional to 21,620,819.72, 29,837,317.36 and 13,248,044.68 is: 18,282,660.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,620,819.72 : 29,837,317.36 = 13,248,044.68 : x
  2. Step 2: Convert to fraction form
    21,620,819.72/29,837,317.36 = 13,248,044.68/x
  3. Step 3: Cross multiply
    21,620,819.72x = 29,837,317.36 × 13,248,044.68
  4. Step 4: Simplify right side
    21,620,819.72x = 395,286,113,516,619.62
  5. Step 5: Solve for x
    x = 395,286,113,516,619.62/21,620,819.72
  6. Step 6: Final answer
    x = 18,282,660.82

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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.