Home / 20,940.45-28,864.09-17,156.94

Finding the Fourth Proportional to 20,940.45, 28,864.09 and 17,156.94

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Solution

The fourth proportional to 20,940.45, 28,864.09 and 17,156.94 is: 23,648.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,940.45 : 28,864.09 = 17,156.94 : x
  2. Step 2: Convert to fraction form
    20,940.45/28,864.09 = 17,156.94/x
  3. Step 3: Cross multiply
    20,940.45x = 28,864.09 × 17,156.94
  4. Step 4: Simplify right side
    20,940.45x = 495,219,460.28
  5. Step 5: Solve for x
    x = 495,219,460.28/20,940.45
  6. Step 6: Final answer
    x = 23,648.94

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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.