Home / 13,487,980.80-20,231,971.20-11,929,087.20

Finding the Fourth Proportional to 13,487,980.80, 20,231,971.20 and 11,929,087.20

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Solution

The fourth proportional to 13,487,980.80, 20,231,971.20 and 11,929,087.20 is: 17,893,630.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,487,980.80 : 20,231,971.20 = 11,929,087.20 : x
  2. Step 2: Convert to fraction form
    13,487,980.80/20,231,971.20 = 11,929,087.20/x
  3. Step 3: Cross multiply
    13,487,980.80x = 20,231,971.20 × 11,929,087.20
  4. Step 4: Simplify right side
    13,487,980.80x = 241,348,948,672,688.62
  5. Step 5: Solve for x
    x = 241,348,948,672,688.62/13,487,980.80
  6. Step 6: Final answer
    x = 17,893,630.80

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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.