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Finding the Fourth Proportional to 14,581.92, 20,122.84 and 8,208.51

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Solution

The fourth proportional to 14,581.92, 20,122.84 and 8,208.51 is: 11,327.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,581.92 : 20,122.84 = 8,208.51 : x
  2. Step 2: Convert to fraction form
    14,581.92/20,122.84 = 8,208.51/x
  3. Step 3: Cross multiply
    14,581.92x = 20,122.84 × 8,208.51
  4. Step 4: Simplify right side
    14,581.92x = 165,178,492.33
  5. Step 5: Solve for x
    x = 165,178,492.33/14,581.92
  6. Step 6: Final answer
    x = 11,327.62

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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.