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Finding the Fourth Proportional to 15,236.64, 21,027.92 and 9,266.88

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Solution

The fourth proportional to 15,236.64, 21,027.92 and 9,266.88 is: 12,789.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,236.64 : 21,027.92 = 9,266.88 : x
  2. Step 2: Convert to fraction form
    15,236.64/21,027.92 = 9,266.88/x
  3. Step 3: Cross multiply
    15,236.64x = 21,027.92 × 9,266.88
  4. Step 4: Simplify right side
    15,236.64x = 194,863,211.29
  5. Step 5: Solve for x
    x = 194,863,211.29/15,236.64
  6. Step 6: Final answer
    x = 12,789.12

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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.