Home / 15,685,174.53-21,645,108.90-8,715,671.78

Finding the Fourth Proportional to 15,685,174.53, 21,645,108.90 and 8,715,671.78

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Solution

The fourth proportional to 15,685,174.53, 21,645,108.90 and 8,715,671.78 is: 12,027,387.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,685,174.53 : 21,645,108.90 = 8,715,671.78 : x
  2. Step 2: Convert to fraction form
    15,685,174.53/21,645,108.90 = 8,715,671.78/x
  3. Step 3: Cross multiply
    15,685,174.53x = 21,645,108.90 × 8,715,671.78
  4. Step 4: Simplify right side
    15,685,174.53x = 188,651,664,706,531.28
  5. Step 5: Solve for x
    x = 188,651,664,706,531.28/15,685,174.53
  6. Step 6: Final answer
    x = 12,027,387.03

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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.