Home / 20,812,933.22-28,718,421.68-13,072,462.25

Finding the Fourth Proportional to 20,812,933.22, 28,718,421.68 and 13,072,462.25

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Solution

The fourth proportional to 20,812,933.22, 28,718,421.68 and 13,072,462.25 is: 18,037,845.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,812,933.22 : 28,718,421.68 = 13,072,462.25 : x
  2. Step 2: Convert to fraction form
    20,812,933.22/28,718,421.68 = 13,072,462.25/x
  3. Step 3: Cross multiply
    20,812,933.22x = 28,718,421.68 × 13,072,462.25
  4. Step 4: Simplify right side
    20,812,933.22x = 375,420,483,180,470.62
  5. Step 5: Solve for x
    x = 375,420,483,180,470.62/20,812,933.22
  6. Step 6: Final answer
    x = 18,037,845.95

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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.