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Finding the Fourth Proportional to 14,785.41, 20,404.05 and 8,820.52

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Solution

The fourth proportional to 14,785.41, 20,404.05 and 8,820.52 is: 12,172.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,785.41 : 20,404.05 = 8,820.52 : x
  2. Step 2: Convert to fraction form
    14,785.41/20,404.05 = 8,820.52/x
  3. Step 3: Cross multiply
    14,785.41x = 20,404.05 × 8,820.52
  4. Step 4: Simplify right side
    14,785.41x = 179,974,331.11
  5. Step 5: Solve for x
    x = 179,974,331.11/14,785.41
  6. Step 6: Final answer
    x = 12,172.43

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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.