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Finding the Fourth Proportional to 19,103.63, 28,666.96 and 8,159.63

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Solution

The fourth proportional to 19,103.63, 28,666.96 and 8,159.63 is: 12,244.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,103.63 : 28,666.96 = 8,159.63 : x
  2. Step 2: Convert to fraction form
    19,103.63/28,666.96 = 8,159.63/x
  3. Step 3: Cross multiply
    19,103.63x = 28,666.96 × 8,159.63
  4. Step 4: Simplify right side
    19,103.63x = 233,911,786.82
  5. Step 5: Solve for x
    x = 233,911,786.82/19,103.63
  6. Step 6: Final answer
    x = 12,244.36

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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.