Home / 21,090,761.76-31,629,665.91-7,440,715.94

Finding the Fourth Proportional to 21,090,761.76, 31,629,665.91 and 7,440,715.94

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Solution

The fourth proportional to 21,090,761.76, 31,629,665.91 and 7,440,715.94 is: 11,158,788.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,090,761.76 : 31,629,665.91 = 7,440,715.94 : x
  2. Step 2: Convert to fraction form
    21,090,761.76/31,629,665.91 = 7,440,715.94/x
  3. Step 3: Cross multiply
    21,090,761.76x = 31,629,665.91 × 7,440,715.94
  4. Step 4: Simplify right side
    21,090,761.76x = 235,347,359,155,263.25
  5. Step 5: Solve for x
    x = 235,347,359,155,263.25/21,090,761.76
  6. Step 6: Final answer
    x = 11,158,788.94

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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.