Home / 20,435.07-30,661.82-10,434.66

Finding the Fourth Proportional to 20,435.07, 30,661.82 and 10,434.66

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Solution

The fourth proportional to 20,435.07, 30,661.82 and 10,434.66 is: 15,656.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.07 : 30,661.82 = 10,434.66 : x
  2. Step 2: Convert to fraction form
    20,435.07/30,661.82 = 10,434.66/x
  3. Step 3: Cross multiply
    20,435.07x = 30,661.82 × 10,434.66
  4. Step 4: Simplify right side
    20,435.07x = 319,945,597.35
  5. Step 5: Solve for x
    x = 319,945,597.35/20,435.07
  6. Step 6: Final answer
    x = 15,656.69

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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.