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Finding the Fourth Proportional to 18,706.25, 28,059.38 and 9,472.25

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Solution

The fourth proportional to 18,706.25, 28,059.38 and 9,472.25 is: 14,208.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,706.25 : 28,059.38 = 9,472.25 : x
  2. Step 2: Convert to fraction form
    18,706.25/28,059.38 = 9,472.25/x
  3. Step 3: Cross multiply
    18,706.25x = 28,059.38 × 9,472.25
  4. Step 4: Simplify right side
    18,706.25x = 265,785,462.21
  5. Step 5: Solve for x
    x = 265,785,462.21/18,706.25
  6. Step 6: Final answer
    x = 14,208.38

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1.5x scale

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.