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Finding the Fourth Proportional to 15,772,813.86, 21,766,473.96 and 8,529,469.86

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Solution

The fourth proportional to 15,772,813.86, 21,766,473.96 and 8,529,469.86 is: 11,770,663.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,772,813.86 : 21,766,473.96 = 8,529,469.86 : x
  2. Step 2: Convert to fraction form
    15,772,813.86/21,766,473.96 = 8,529,469.86/x
  3. Step 3: Cross multiply
    15,772,813.86x = 21,766,473.96 × 8,529,469.86
  4. Step 4: Simplify right side
    15,772,813.86x = 185,656,483,600,294.84
  5. Step 5: Solve for x
    x = 185,656,483,600,294.84/15,772,813.86
  6. Step 6: Final answer
    x = 11,770,663.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.