Home / 13,715.78-18,913.62-11,732.90

Finding the Fourth Proportional to 13,715.78, 18,913.62 and 11,732.90

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Solution

The fourth proportional to 13,715.78, 18,913.62 and 11,732.90 is: 16,179.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,715.78 : 18,913.62 = 11,732.90 : x
  2. Step 2: Convert to fraction form
    13,715.78/18,913.62 = 11,732.90/x
  3. Step 3: Cross multiply
    13,715.78x = 18,913.62 × 11,732.90
  4. Step 4: Simplify right side
    13,715.78x = 221,911,612.10
  5. Step 5: Solve for x
    x = 221,911,612.10/13,715.78
  6. Step 6: Final answer
    x = 16,179.29

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1.5x scale

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.