Home / 43,310.79-64,974.28-13,720.68

Finding the Fourth Proportional to 43,310.79, 64,974.28 and 13,720.68

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Solution

The fourth proportional to 43,310.79, 64,974.28 and 13,720.68 is: 20,583.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,310.79 : 64,974.28 = 13,720.68 : x
  2. Step 2: Convert to fraction form
    43,310.79/64,974.28 = 13,720.68/x
  3. Step 3: Cross multiply
    43,310.79x = 64,974.28 × 13,720.68
  4. Step 4: Simplify right side
    43,310.79x = 891,490,944.94
  5. Step 5: Solve for x
    x = 891,490,944.94/43,310.79
  6. Step 6: Final answer
    x = 20,583.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.