Home / 21,074.83-31,613.87-7,926.91

Finding the Fourth Proportional to 21,074.83, 31,613.87 and 7,926.91

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Solution

The fourth proportional to 21,074.83, 31,613.87 and 7,926.91 is: 11,890.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,074.83 : 31,613.87 = 7,926.91 : x
  2. Step 2: Convert to fraction form
    21,074.83/31,613.87 = 7,926.91/x
  3. Step 3: Cross multiply
    21,074.83x = 31,613.87 × 7,926.91
  4. Step 4: Simplify right side
    21,074.83x = 250,600,302.24
  5. Step 5: Solve for x
    x = 250,600,302.24/21,074.83
  6. Step 6: Final answer
    x = 11,890.98

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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.