Home / 21,176.83-31,764.33-7,135.93

Finding the Fourth Proportional to 21,176.83, 31,764.33 and 7,135.93

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Solution

The fourth proportional to 21,176.83, 31,764.33 and 7,135.93 is: 10,703.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,176.83 : 31,764.33 = 7,135.93 : x
  2. Step 2: Convert to fraction form
    21,176.83/31,764.33 = 7,135.93/x
  3. Step 3: Cross multiply
    21,176.83x = 31,764.33 × 7,135.93
  4. Step 4: Simplify right side
    21,176.83x = 226,668,035.38
  5. Step 5: Solve for x
    x = 226,668,035.38/21,176.83
  6. Step 6: Final answer
    x = 10,703.59

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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.