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Finding the Fourth Proportional to 18,670.30, 25,800.22 and 14,722.76

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Solution

The fourth proportional to 18,670.30, 25,800.22 and 14,722.76 is: 20,345.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,670.30 : 25,800.22 = 14,722.76 : x
  2. Step 2: Convert to fraction form
    18,670.30/25,800.22 = 14,722.76/x
  3. Step 3: Cross multiply
    18,670.30x = 25,800.22 × 14,722.76
  4. Step 4: Simplify right side
    18,670.30x = 379,850,529.91
  5. Step 5: Solve for x
    x = 379,850,529.91/18,670.30
  6. Step 6: Final answer
    x = 20,345.18

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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.