Home / 20,885,669.60-31,328,461.32-11,783,635.29

Finding the Fourth Proportional to 20,885,669.60, 31,328,461.32 and 11,783,635.29

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Solution

The fourth proportional to 20,885,669.60, 31,328,461.32 and 11,783,635.29 is: 17,675,428.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885,669.60 : 31,328,461.32 = 11,783,635.29 : x
  2. Step 2: Convert to fraction form
    20,885,669.60/31,328,461.32 = 11,783,635.29/x
  3. Step 3: Cross multiply
    20,885,669.60x = 31,328,461.32 × 11,783,635.29
  4. Step 4: Simplify right side
    20,885,669.60x = 369,163,162,347,563.31
  5. Step 5: Solve for x
    x = 369,163,162,347,563.31/20,885,669.60
  6. Step 6: Final answer
    x = 17,675,428.63

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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.