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Finding the Fourth Proportional to 19,926.63, 29,888.73 and 8,239.55

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Solution

The fourth proportional to 19,926.63, 29,888.73 and 8,239.55 is: 12,358.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,926.63 : 29,888.73 = 8,239.55 : x
  2. Step 2: Convert to fraction form
    19,926.63/29,888.73 = 8,239.55/x
  3. Step 3: Cross multiply
    19,926.63x = 29,888.73 × 8,239.55
  4. Step 4: Simplify right side
    19,926.63x = 246,269,535.83
  5. Step 5: Solve for x
    x = 246,269,535.83/19,926.63
  6. Step 6: Final answer
    x = 12,358.82

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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.