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Finding the Fourth Proportional to 18,283.76, 25,231.71 and 9,900.26

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Solution

The fourth proportional to 18,283.76, 25,231.71 and 9,900.26 is: 13,662.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,283.76 : 25,231.71 = 9,900.26 : x
  2. Step 2: Convert to fraction form
    18,283.76/25,231.71 = 9,900.26/x
  3. Step 3: Cross multiply
    18,283.76x = 25,231.71 × 9,900.26
  4. Step 4: Simplify right side
    18,283.76x = 249,800,489.24
  5. Step 5: Solve for x
    x = 249,800,489.24/18,283.76
  6. Step 6: Final answer
    x = 13,662.42

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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.