Home / 47,997.60-71,996.36-12,940.80

Finding the Fourth Proportional to 47,997.60, 71,996.36 and 12,940.80

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Solution

The fourth proportional to 47,997.60, 71,996.36 and 12,940.80 is: 19,411.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,997.60 : 71,996.36 = 12,940.80 : x
  2. Step 2: Convert to fraction form
    47,997.60/71,996.36 = 12,940.80/x
  3. Step 3: Cross multiply
    47,997.60x = 71,996.36 × 12,940.80
  4. Step 4: Simplify right side
    47,997.60x = 931,690,495.49
  5. Step 5: Solve for x
    x = 931,690,495.49/47,997.60
  6. Step 6: Final answer
    x = 19,411.19

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1.5x scale

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.