Home / 20,831,215.80-31,242,158.10-13,692,847.80

Finding the Fourth Proportional to 20,831,215.80, 31,242,158.10 and 13,692,847.80

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Solution

The fourth proportional to 20,831,215.80, 31,242,158.10 and 13,692,847.80 is: 20,536,204.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,831,215.80 : 31,242,158.10 = 13,692,847.80 : x
  2. Step 2: Convert to fraction form
    20,831,215.80/31,242,158.10 = 13,692,847.80/x
  3. Step 3: Cross multiply
    20,831,215.80x = 31,242,158.10 × 13,692,847.80
  4. Step 4: Simplify right side
    20,831,215.80x = 427,794,115,806,837.25
  5. Step 5: Solve for x
    x = 427,794,115,806,837.25/20,831,215.80
  6. Step 6: Final answer
    x = 20,536,204.89

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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.