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Finding the Fourth Proportional to 18,672.24, 25,765.68 and 10,714.28

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Solution

The fourth proportional to 18,672.24, 25,765.68 and 10,714.28 is: 14,784.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672.24 : 25,765.68 = 10,714.28 : x
  2. Step 2: Convert to fraction form
    18,672.24/25,765.68 = 10,714.28/x
  3. Step 3: Cross multiply
    18,672.24x = 25,765.68 × 10,714.28
  4. Step 4: Simplify right side
    18,672.24x = 276,060,709.91
  5. Step 5: Solve for x
    x = 276,060,709.91/18,672.24
  6. Step 6: Final answer
    x = 14,784.55

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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.