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Finding the Fourth Proportional to 14,906.76, 20,570.42 and 8,191.08

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Solution

The fourth proportional to 14,906.76, 20,570.42 and 8,191.08 is: 11,303.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,906.76 : 20,570.42 = 8,191.08 : x
  2. Step 2: Convert to fraction form
    14,906.76/20,570.42 = 8,191.08/x
  3. Step 3: Cross multiply
    14,906.76x = 20,570.42 × 8,191.08
  4. Step 4: Simplify right side
    14,906.76x = 168,493,955.85
  5. Step 5: Solve for x
    x = 168,493,955.85/14,906.76
  6. Step 6: Final answer
    x = 11,303.19

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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.