Home / 20,731,086.60-31,096,629.90-10,653,390.60

Finding the Fourth Proportional to 20,731,086.60, 31,096,629.90 and 10,653,390.60

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Solution

The fourth proportional to 20,731,086.60, 31,096,629.90 and 10,653,390.60 is: 15,980,085.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,731,086.60 : 31,096,629.90 = 10,653,390.60 : x
  2. Step 2: Convert to fraction form
    20,731,086.60/31,096,629.90 = 10,653,390.60/x
  3. Step 3: Cross multiply
    20,731,086.60x = 31,096,629.90 × 10,653,390.60
  4. Step 4: Simplify right side
    20,731,086.60x = 331,284,544,668,338.94
  5. Step 5: Solve for x
    x = 331,284,544,668,338.94/20,731,086.60
  6. Step 6: Final answer
    x = 15,980,085.90

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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.