Home / 43,390.68-65,086.56-13,808.40

Finding the Fourth Proportional to 43,390.68, 65,086.56 and 13,808.40

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Solution

The fourth proportional to 43,390.68, 65,086.56 and 13,808.40 is: 20,712.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,390.68 : 65,086.56 = 13,808.40 : x
  2. Step 2: Convert to fraction form
    43,390.68/65,086.56 = 13,808.40/x
  3. Step 3: Cross multiply
    43,390.68x = 65,086.56 × 13,808.40
  4. Step 4: Simplify right side
    43,390.68x = 898,741,255.10
  5. Step 5: Solve for x
    x = 898,741,255.10/43,390.68
  6. Step 6: Final answer
    x = 20,712.77

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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.