Home / 43,105.13-64,686.86-15,403.13

Finding the Fourth Proportional to 43,105.13, 64,686.86 and 15,403.13

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Solution

The fourth proportional to 43,105.13, 64,686.86 and 15,403.13 is: 23,115.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,105.13 : 64,686.86 = 15,403.13 : x
  2. Step 2: Convert to fraction form
    43,105.13/64,686.86 = 15,403.13/x
  3. Step 3: Cross multiply
    43,105.13x = 64,686.86 × 15,403.13
  4. Step 4: Simplify right side
    43,105.13x = 996,379,713.42
  5. Step 5: Solve for x
    x = 996,379,713.42/43,105.13
  6. Step 6: Final answer
    x = 23,115.11

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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.