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Finding the Fourth Proportional to 20,706.58, 28,542.81 and 17,343.46

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Solution

The fourth proportional to 20,706.58, 28,542.81 and 17,343.46 is: 23,906.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,706.58 : 28,542.81 = 17,343.46 : x
  2. Step 2: Convert to fraction form
    20,706.58/28,542.81 = 17,343.46/x
  3. Step 3: Cross multiply
    20,706.58x = 28,542.81 × 17,343.46
  4. Step 4: Simplify right side
    20,706.58x = 495,031,083.52
  5. Step 5: Solve for x
    x = 495,031,083.52/20,706.58
  6. Step 6: Final answer
    x = 23,906.95

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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.