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Finding the Fourth Proportional to 18,973,201.13, 28,471,136.31 and 17,429,558.74

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Solution

The fourth proportional to 18,973,201.13, 28,471,136.31 and 17,429,558.74 is: 26,154,750.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,973,201.13 : 28,471,136.31 = 17,429,558.74 : x
  2. Step 2: Convert to fraction form
    18,973,201.13/28,471,136.31 = 17,429,558.74/x
  3. Step 3: Cross multiply
    18,973,201.13x = 28,471,136.31 × 17,429,558.74
  4. Step 4: Simplify right side
    18,973,201.13x = 496,239,342,638,514
  5. Step 5: Solve for x
    x = 496,239,342,638,514/18,973,201.13
  6. Step 6: Final answer
    x = 26,154,750.55

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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.