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Finding the Fourth Proportional to 20,498.96, 30,748.75 and 19,492.20

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Solution

The fourth proportional to 20,498.96, 30,748.75 and 19,492.20 is: 29,238.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,498.96 : 30,748.75 = 19,492.20 : x
  2. Step 2: Convert to fraction form
    20,498.96/30,748.75 = 19,492.20/x
  3. Step 3: Cross multiply
    20,498.96x = 30,748.75 × 19,492.20
  4. Step 4: Simplify right side
    20,498.96x = 599,360,736.02
  5. Step 5: Solve for x
    x = 599,360,736.02/20,498.96
  6. Step 6: Final answer
    x = 29,238.59

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1.5x scale

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.