Home / 20,926.59-31,365.28-8,429.93

Finding the Fourth Proportional to 20,926.59, 31,365.28 and 8,429.93

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Solution

The fourth proportional to 20,926.59, 31,365.28 and 8,429.93 is: 12,634.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.59 : 31,365.28 = 8,429.93 : x
  2. Step 2: Convert to fraction form
    20,926.59/31,365.28 = 8,429.93/x
  3. Step 3: Cross multiply
    20,926.59x = 31,365.28 × 8,429.93
  4. Step 4: Simplify right side
    20,926.59x = 264,407,072.68
  5. Step 5: Solve for x
    x = 264,407,072.68/20,926.59
  6. Step 6: Final answer
    x = 12,634.98

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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.