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Finding the Fourth Proportional to 35,492.88, 48,982.68 and 20,388

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Solution

The fourth proportional to 35,492.88, 48,982.68 and 20,388 is: 28,136.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,492.88 : 48,982.68 = 20,388 : x
  2. Step 2: Convert to fraction form
    35,492.88/48,982.68 = 20,388/x
  3. Step 3: Cross multiply
    35,492.88x = 48,982.68 × 20,388
  4. Step 4: Simplify right side
    35,492.88x = 998,658,879.84
  5. Step 5: Solve for x
    x = 998,658,879.84/35,492.88
  6. Step 6: Final answer
    x = 28,136.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.