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Finding the Fourth Proportional to 14,653.56, 20,221.20 and 8,364.72

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Solution

The fourth proportional to 14,653.56, 20,221.20 and 8,364.72 is: 11,542.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,653.56 : 20,221.20 = 8,364.72 : x
  2. Step 2: Convert to fraction form
    14,653.56/20,221.20 = 8,364.72/x
  3. Step 3: Cross multiply
    14,653.56x = 20,221.20 × 8,364.72
  4. Step 4: Simplify right side
    14,653.56x = 169,144,676.06
  5. Step 5: Solve for x
    x = 169,144,676.06/14,653.56
  6. Step 6: Final answer
    x = 11,542.91

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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.