Home / 21,790,550.22-30,069,988.86-12,491,453.76

Finding the Fourth Proportional to 21,790,550.22, 30,069,988.86 and 12,491,453.76

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Solution

The fourth proportional to 21,790,550.22, 30,069,988.86 and 12,491,453.76 is: 17,237,649.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,790,550.22 : 30,069,988.86 = 12,491,453.76 : x
  2. Step 2: Convert to fraction form
    21,790,550.22/30,069,988.86 = 12,491,453.76/x
  3. Step 3: Cross multiply
    21,790,550.22x = 30,069,988.86 × 12,491,453.76
  4. Step 4: Simplify right side
    21,790,550.22x = 375,617,875,408,405.12
  5. Step 5: Solve for x
    x = 375,617,875,408,405.12/21,790,550.22
  6. Step 6: Final answer
    x = 17,237,649.88

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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.