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Finding the Fourth Proportional to 14,979.22, 20,671.02 and 8,264.60

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Solution

The fourth proportional to 14,979.22, 20,671.02 and 8,264.60 is: 11,404.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,979.22 : 20,671.02 = 8,264.60 : x
  2. Step 2: Convert to fraction form
    14,979.22/20,671.02 = 8,264.60/x
  3. Step 3: Cross multiply
    14,979.22x = 20,671.02 × 8,264.60
  4. Step 4: Simplify right side
    14,979.22x = 170,837,711.89
  5. Step 5: Solve for x
    x = 170,837,711.89/14,979.22
  6. Step 6: Final answer
    x = 11,404.98

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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.