Home / 20,172,360.80-30,240,170.40-7,389,783.20

Finding the Fourth Proportional to 20,172,360.80, 30,240,170.40 and 7,389,783.20

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Solution

The fourth proportional to 20,172,360.80, 30,240,170.40 and 7,389,783.20 is: 11,077,944.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,172,360.80 : 30,240,170.40 = 7,389,783.20 : x
  2. Step 2: Convert to fraction form
    20,172,360.80/30,240,170.40 = 7,389,783.20/x
  3. Step 3: Cross multiply
    20,172,360.80x = 30,240,170.40 × 7,389,783.20
  4. Step 4: Simplify right side
    20,172,360.80x = 223,468,303,187,057.28
  5. Step 5: Solve for x
    x = 223,468,303,187,057.28/20,172,360.80
  6. Step 6: Final answer
    x = 11,077,944.99

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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.