Home / 20,958,050.60-31,374,090.30-12,433,999.40

Finding the Fourth Proportional to 20,958,050.60, 31,374,090.30 and 12,433,999.40

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Solution

The fourth proportional to 20,958,050.60, 31,374,090.30 and 12,433,999.40 is: 18,613,630.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958,050.60 : 31,374,090.30 = 12,433,999.40 : x
  2. Step 2: Convert to fraction form
    20,958,050.60/31,374,090.30 = 12,433,999.40/x
  3. Step 3: Cross multiply
    20,958,050.60x = 31,374,090.30 × 12,433,999.40
  4. Step 4: Simplify right side
    20,958,050.60x = 390,105,419,965,745.81
  5. Step 5: Solve for x
    x = 390,105,419,965,745.81/20,958,050.60
  6. Step 6: Final answer
    x = 18,613,630.98

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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.