Home / 21,246,111.60-31,831,151.40-12,921,759.60

Finding the Fourth Proportional to 21,246,111.60, 31,831,151.40 and 12,921,759.60

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Solution

The fourth proportional to 21,246,111.60, 31,831,151.40 and 12,921,759.60 is: 19,359,518.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,246,111.60 : 31,831,151.40 = 12,921,759.60 : x
  2. Step 2: Convert to fraction form
    21,246,111.60/31,831,151.40 = 12,921,759.60/x
  3. Step 3: Cross multiply
    21,246,111.60x = 31,831,151.40 × 12,921,759.60
  4. Step 4: Simplify right side
    21,246,111.60x = 411,314,486,182,003.44
  5. Step 5: Solve for x
    x = 411,314,486,182,003.44/21,246,111.60
  6. Step 6: Final answer
    x = 19,359,518.29

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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.