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Finding the Fourth Proportional to 14,570.20, 20,106.30 and 8,282.20

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Solution

The fourth proportional to 14,570.20, 20,106.30 and 8,282.20 is: 11,429.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,570.20 : 20,106.30 = 8,282.20 : x
  2. Step 2: Convert to fraction form
    14,570.20/20,106.30 = 8,282.20/x
  3. Step 3: Cross multiply
    14,570.20x = 20,106.30 × 8,282.20
  4. Step 4: Simplify right side
    14,570.20x = 166,524,397.86
  5. Step 5: Solve for x
    x = 166,524,397.86/14,570.20
  6. Step 6: Final answer
    x = 11,429.11

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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.