Home / 21,250,809.90-31,947,073.65-18,133,022.70

Finding the Fourth Proportional to 21,250,809.90, 31,947,073.65 and 18,133,022.70

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Solution

The fourth proportional to 21,250,809.90, 31,947,073.65 and 18,133,022.70 is: 27,259,996.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250,809.90 : 31,947,073.65 = 18,133,022.70 : x
  2. Step 2: Convert to fraction form
    21,250,809.90/31,947,073.65 = 18,133,022.70/x
  3. Step 3: Cross multiply
    21,250,809.90x = 31,947,073.65 × 18,133,022.70
  4. Step 4: Simplify right side
    21,250,809.90x = 579,297,011,694,021.75
  5. Step 5: Solve for x
    x = 579,297,011,694,021.75/21,250,809.90
  6. Step 6: Final answer
    x = 27,259,996.89

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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.