Home / 21,131,114.70-31,696,672.05-7,666,193.10

Finding the Fourth Proportional to 21,131,114.70, 31,696,672.05 and 7,666,193.10

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Solution

The fourth proportional to 21,131,114.70, 31,696,672.05 and 7,666,193.10 is: 11,499,289.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,131,114.70 : 31,696,672.05 = 7,666,193.10 : x
  2. Step 2: Convert to fraction form
    21,131,114.70/31,696,672.05 = 7,666,193.10/x
  3. Step 3: Cross multiply
    21,131,114.70x = 31,696,672.05 × 7,666,193.10
  4. Step 4: Simplify right side
    21,131,114.70x = 242,992,808,562,672.84
  5. Step 5: Solve for x
    x = 242,992,808,562,672.84/21,131,114.70
  6. Step 6: Final answer
    x = 11,499,289.65

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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.