Home / 20,604,619.80-28,434,485.16-12,874,145.04

Finding the Fourth Proportional to 20,604,619.80, 28,434,485.16 and 12,874,145.04

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Solution

The fourth proportional to 20,604,619.80, 28,434,485.16 and 12,874,145.04 is: 17,766,388.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,604,619.80 : 28,434,485.16 = 12,874,145.04 : x
  2. Step 2: Convert to fraction form
    20,604,619.80/28,434,485.16 = 12,874,145.04/x
  3. Step 3: Cross multiply
    20,604,619.80x = 28,434,485.16 × 12,874,145.04
  4. Step 4: Simplify right side
    20,604,619.80x = 366,069,686,087,567.56
  5. Step 5: Solve for x
    x = 366,069,686,087,567.56/20,604,619.80
  6. Step 6: Final answer
    x = 17,766,388.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.