Home / 20,712,428.60-31,057,583.70-8,731,628.60

Finding the Fourth Proportional to 20,712,428.60, 31,057,583.70 and 8,731,628.60

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Solution

The fourth proportional to 20,712,428.60, 31,057,583.70 and 8,731,628.60 is: 13,092,780.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712,428.60 : 31,057,583.70 = 8,731,628.60 : x
  2. Step 2: Convert to fraction form
    20,712,428.60/31,057,583.70 = 8,731,628.60/x
  3. Step 3: Cross multiply
    20,712,428.60x = 31,057,583.70 × 8,731,628.60
  4. Step 4: Simplify right side
    20,712,428.60x = 271,183,286,081,813.81
  5. Step 5: Solve for x
    x = 271,183,286,081,813.81/20,712,428.60
  6. Step 6: Final answer
    x = 13,092,780.73

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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.