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Finding the Fourth Proportional to 14,171,602.80, 21,241,657.80 and 7,786,437.60

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Solution

The fourth proportional to 14,171,602.80, 21,241,657.80 and 7,786,437.60 is: 11,671,004.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,171,602.80 : 21,241,657.80 = 7,786,437.60 : x
  2. Step 2: Convert to fraction form
    14,171,602.80/21,241,657.80 = 7,786,437.60/x
  3. Step 3: Cross multiply
    14,171,602.80x = 21,241,657.80 × 7,786,437.60
  4. Step 4: Simplify right side
    14,171,602.80x = 165,396,842,980,253.28
  5. Step 5: Solve for x
    x = 165,396,842,980,253.28/14,171,602.80
  6. Step 6: Final answer
    x = 11,671,004.71

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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.