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Finding the Fourth Proportional to 19,263.66, 28,899.92 and 8,170.77

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Solution

The fourth proportional to 19,263.66, 28,899.92 and 8,170.77 is: 12,258.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,263.66 : 28,899.92 = 8,170.77 : x
  2. Step 2: Convert to fraction form
    19,263.66/28,899.92 = 8,170.77/x
  3. Step 3: Cross multiply
    19,263.66x = 28,899.92 × 8,170.77
  4. Step 4: Simplify right side
    19,263.66x = 236,134,599.34
  5. Step 5: Solve for x
    x = 236,134,599.34/19,263.66
  6. Step 6: Final answer
    x = 12,258.03

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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.