Home / 20,277.41-30,417.91-7,129.89

Finding the Fourth Proportional to 20,277.41, 30,417.91 and 7,129.89

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Solution

The fourth proportional to 20,277.41, 30,417.91 and 7,129.89 is: 10,695.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,277.41 : 30,417.91 = 7,129.89 : x
  2. Step 2: Convert to fraction form
    20,277.41/30,417.91 = 7,129.89/x
  3. Step 3: Cross multiply
    20,277.41x = 30,417.91 × 7,129.89
  4. Step 4: Simplify right side
    20,277.41x = 216,876,352.33
  5. Step 5: Solve for x
    x = 216,876,352.33/20,277.41
  6. Step 6: Final answer
    x = 10,695.47

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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.