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Finding the Fourth Proportional to 12,602,714.60, 18,879,188.70 and 7,538,983.40

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Solution

The fourth proportional to 12,602,714.60, 18,879,188.70 and 7,538,983.40 is: 11,293,589.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,602,714.60 : 18,879,188.70 = 7,538,983.40 : x
  2. Step 2: Convert to fraction form
    12,602,714.60/18,879,188.70 = 7,538,983.40/x
  3. Step 3: Cross multiply
    12,602,714.60x = 18,879,188.70 × 7,538,983.40
  4. Step 4: Simplify right side
    12,602,714.60x = 142,329,890,214,767.59
  5. Step 5: Solve for x
    x = 142,329,890,214,767.59/12,602,714.60
  6. Step 6: Final answer
    x = 11,293,589.89

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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.