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Finding the Fourth Proportional to 14,651.88, 20,219.40 and 8,364.12

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Solution

The fourth proportional to 14,651.88, 20,219.40 and 8,364.12 is: 11,542.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,651.88 : 20,219.40 = 8,364.12 : x
  2. Step 2: Convert to fraction form
    14,651.88/20,219.40 = 8,364.12/x
  3. Step 3: Cross multiply
    14,651.88x = 20,219.40 × 8,364.12
  4. Step 4: Simplify right side
    14,651.88x = 169,117,487.93
  5. Step 5: Solve for x
    x = 169,117,487.93/14,651.88
  6. Step 6: Final answer
    x = 11,542.37

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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.