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Finding the Fourth Proportional to 18,278.01, 25,223.76 and 9,894.51

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Solution

The fourth proportional to 18,278.01, 25,223.76 and 9,894.51 is: 13,654.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,278.01 : 25,223.76 = 9,894.51 : x
  2. Step 2: Convert to fraction form
    18,278.01/25,223.76 = 9,894.51/x
  3. Step 3: Cross multiply
    18,278.01x = 25,223.76 × 9,894.51
  4. Step 4: Simplify right side
    18,278.01x = 249,576,745.56
  5. Step 5: Solve for x
    x = 249,576,745.56/18,278.01
  6. Step 6: Final answer
    x = 13,654.48

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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.