Home / 20,651,971-28,500,257.70-11,359,780.60

Finding the Fourth Proportional to 20,651,971, 28,500,257.70 and 11,359,780.60

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Solution

The fourth proportional to 20,651,971, 28,500,257.70 and 11,359,780.60 is: 15,676,793.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,651,971 : 28,500,257.70 = 11,359,780.60 : x
  2. Step 2: Convert to fraction form
    20,651,971/28,500,257.70 = 11,359,780.60/x
  3. Step 3: Cross multiply
    20,651,971x = 28,500,257.70 × 11,359,780.60
  4. Step 4: Simplify right side
    20,651,971x = 323,756,674,515,460.62
  5. Step 5: Solve for x
    x = 323,756,674,515,460.62/20,651,971
  6. Step 6: Final answer
    x = 15,676,793.01

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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.