Home / 20,128,976.80-30,193,465.20-9,342,692.80

Finding the Fourth Proportional to 20,128,976.80, 30,193,465.20 and 9,342,692.80

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Solution

The fourth proportional to 20,128,976.80, 30,193,465.20 and 9,342,692.80 is: 14,014,039.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,128,976.80 : 30,193,465.20 = 9,342,692.80 : x
  2. Step 2: Convert to fraction form
    20,128,976.80/30,193,465.20 = 9,342,692.80/x
  3. Step 3: Cross multiply
    20,128,976.80x = 30,193,465.20 × 9,342,692.80
  4. Step 4: Simplify right side
    20,128,976.80x = 282,088,269,931,090.56
  5. Step 5: Solve for x
    x = 282,088,269,931,090.56/20,128,976.80
  6. Step 6: Final answer
    x = 14,014,039.20

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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.