Home / 20,806,786.60-31,172,855.10-17,820,802.60

Finding the Fourth Proportional to 20,806,786.60, 31,172,855.10 and 17,820,802.60

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Solution

The fourth proportional to 20,806,786.60, 31,172,855.10 and 17,820,802.60 is: 26,699,235.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806,786.60 : 31,172,855.10 = 17,820,802.60 : x
  2. Step 2: Convert to fraction form
    20,806,786.60/31,172,855.10 = 17,820,802.60/x
  3. Step 3: Cross multiply
    20,806,786.60x = 31,172,855.10 × 17,820,802.60
  4. Step 4: Simplify right side
    20,806,786.60x = 555,525,297,215,503.31
  5. Step 5: Solve for x
    x = 555,525,297,215,503.31/20,806,786.60
  6. Step 6: Final answer
    x = 26,699,235.59

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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.