Home / 21,074.63-31,613.76-5,492.25

Finding the Fourth Proportional to 21,074.63, 31,613.76 and 5,492.25

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Solution

The fourth proportional to 21,074.63, 31,613.76 and 5,492.25 is: 8,238.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,074.63 : 31,613.76 = 5,492.25 : x
  2. Step 2: Convert to fraction form
    21,074.63/31,613.76 = 5,492.25/x
  3. Step 3: Cross multiply
    21,074.63x = 31,613.76 × 5,492.25
  4. Step 4: Simplify right side
    21,074.63x = 173,630,673.36
  5. Step 5: Solve for x
    x = 173,630,673.36/21,074.63
  6. Step 6: Final answer
    x = 8,238.85

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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.