Home / 12,712,611.36-19,068,755.76-3,128,109.60

Finding the Fourth Proportional to 12,712,611.36, 19,068,755.76 and 3,128,109.60

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Solution

The fourth proportional to 12,712,611.36, 19,068,755.76 and 3,128,109.60 is: 4,692,124.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,712,611.36 : 19,068,755.76 = 3,128,109.60 : x
  2. Step 2: Convert to fraction form
    12,712,611.36/19,068,755.76 = 3,128,109.60/x
  3. Step 3: Cross multiply
    12,712,611.36x = 19,068,755.76 × 3,128,109.60
  4. Step 4: Simplify right side
    12,712,611.36x = 59,649,157,952,911.30
  5. Step 5: Solve for x
    x = 59,649,157,952,911.30/12,712,611.36
  6. Step 6: Final answer
    x = 4,692,124.71

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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.