Home / 20,735,998.40-31,103,997.60-20,400,075.20

Finding the Fourth Proportional to 20,735,998.40, 31,103,997.60 and 20,400,075.20

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Solution

The fourth proportional to 20,735,998.40, 31,103,997.60 and 20,400,075.20 is: 30,600,112.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735,998.40 : 31,103,997.60 = 20,400,075.20 : x
  2. Step 2: Convert to fraction form
    20,735,998.40/31,103,997.60 = 20,400,075.20/x
  3. Step 3: Cross multiply
    20,735,998.40x = 31,103,997.60 × 20,400,075.20
  4. Step 4: Simplify right side
    20,735,998.40x = 634,523,890,060,619.50
  5. Step 5: Solve for x
    x = 634,523,890,060,619.50/20,735,998.40
  6. Step 6: Final answer
    x = 30,600,112.80

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1.5x scale

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.