Home / 20,811,938.20-31,217,907.30-20,493,073.60

Finding the Fourth Proportional to 20,811,938.20, 31,217,907.30 and 20,493,073.60

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Solution

The fourth proportional to 20,811,938.20, 31,217,907.30 and 20,493,073.60 is: 30,739,610.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,811,938.20 : 31,217,907.30 = 20,493,073.60 : x
  2. Step 2: Convert to fraction form
    20,811,938.20/31,217,907.30 = 20,493,073.60/x
  3. Step 3: Cross multiply
    20,811,938.20x = 31,217,907.30 × 20,493,073.60
  4. Step 4: Simplify right side
    20,811,938.20x = 639,750,871,936,877.38
  5. Step 5: Solve for x
    x = 639,750,871,936,877.38/20,811,938.20
  6. Step 6: Final answer
    x = 30,739,610.40

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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.