Home / 20,617,696.57-28,450,761.99-11,916,432.76

Finding the Fourth Proportional to 20,617,696.57, 28,450,761.99 and 11,916,432.76

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Solution

The fourth proportional to 20,617,696.57, 28,450,761.99 and 11,916,432.76 is: 16,443,718.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617,696.57 : 28,450,761.99 = 11,916,432.76 : x
  2. Step 2: Convert to fraction form
    20,617,696.57/28,450,761.99 = 11,916,432.76/x
  3. Step 3: Cross multiply
    20,617,696.57x = 28,450,761.99 × 11,916,432.76
  4. Step 4: Simplify right side
    20,617,696.57x = 339,031,592,108,785.25
  5. Step 5: Solve for x
    x = 339,031,592,108,785.25/20,617,696.57
  6. Step 6: Final answer
    x = 16,443,718.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.