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Finding the Fourth Proportional to 14,037.58, 21,045.84 and 8,489.79

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Solution

The fourth proportional to 14,037.58, 21,045.84 and 8,489.79 is: 12,728.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,037.58 : 21,045.84 = 8,489.79 : x
  2. Step 2: Convert to fraction form
    14,037.58/21,045.84 = 8,489.79/x
  3. Step 3: Cross multiply
    14,037.58x = 21,045.84 × 8,489.79
  4. Step 4: Simplify right side
    14,037.58x = 178,674,761.97
  5. Step 5: Solve for x
    x = 178,674,761.97/14,037.58
  6. Step 6: Final answer
    x = 12,728.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.