Home / 20,221,469.40-30,332,204.10-19,185,159.45

Finding the Fourth Proportional to 20,221,469.40, 30,332,204.10 and 19,185,159.45

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Solution

The fourth proportional to 20,221,469.40, 30,332,204.10 and 19,185,159.45 is: 28,777,739.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221,469.40 : 30,332,204.10 = 19,185,159.45 : x
  2. Step 2: Convert to fraction form
    20,221,469.40/30,332,204.10 = 19,185,159.45/x
  3. Step 3: Cross multiply
    20,221,469.40x = 30,332,204.10 × 19,185,159.45
  4. Step 4: Simplify right side
    20,221,469.40x = 581,928,172,128,443.75
  5. Step 5: Solve for x
    x = 581,928,172,128,443.75/20,221,469.40
  6. Step 6: Final answer
    x = 28,777,739.18

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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.