Home / 15,916.80-23,872.32-6,689.28

Finding the Fourth Proportional to 15,916.80, 23,872.32 and 6,689.28

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Solution

The fourth proportional to 15,916.80, 23,872.32 and 6,689.28 is: 10,032.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,916.80 : 23,872.32 = 6,689.28 : x
  2. Step 2: Convert to fraction form
    15,916.80/23,872.32 = 6,689.28/x
  3. Step 3: Cross multiply
    15,916.80x = 23,872.32 × 6,689.28
  4. Step 4: Simplify right side
    15,916.80x = 159,688,632.73
  5. Step 5: Solve for x
    x = 159,688,632.73/15,916.80
  6. Step 6: Final answer
    x = 10,032.71

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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.