Home / 20,603,999.40-30,905,999.10-15,835,756.20

Finding the Fourth Proportional to 20,603,999.40, 30,905,999.10 and 15,835,756.20

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Solution

The fourth proportional to 20,603,999.40, 30,905,999.10 and 15,835,756.20 is: 23,753,634.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,603,999.40 : 30,905,999.10 = 15,835,756.20 : x
  2. Step 2: Convert to fraction form
    20,603,999.40/30,905,999.10 = 15,835,756.20/x
  3. Step 3: Cross multiply
    20,603,999.40x = 30,905,999.10 × 15,835,756.20
  4. Step 4: Simplify right side
    20,603,999.40x = 489,419,866,865,019.44
  5. Step 5: Solve for x
    x = 489,419,866,865,019.44/20,603,999.40
  6. Step 6: Final answer
    x = 23,753,634.30

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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.