Home / 20,413,473.40-30,584,780.70-13,221,305.20

Finding the Fourth Proportional to 20,413,473.40, 30,584,780.70 and 13,221,305.20

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Solution

The fourth proportional to 20,413,473.40, 30,584,780.70 and 13,221,305.20 is: 19,809,011.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,413,473.40 : 30,584,780.70 = 13,221,305.20 : x
  2. Step 2: Convert to fraction form
    20,413,473.40/30,584,780.70 = 13,221,305.20/x
  3. Step 3: Cross multiply
    20,413,473.40x = 30,584,780.70 × 13,221,305.20
  4. Step 4: Simplify right side
    20,413,473.40x = 404,370,720,109,769.62
  5. Step 5: Solve for x
    x = 404,370,720,109,769.62/20,413,473.40
  6. Step 6: Final answer
    x = 19,809,011.05

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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.