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Finding the Fourth Proportional to 18,462.46, 25,480.02 and 10,911.28

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Solution

The fourth proportional to 18,462.46, 25,480.02 and 10,911.28 is: 15,058.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,462.46 : 25,480.02 = 10,911.28 : x
  2. Step 2: Convert to fraction form
    18,462.46/25,480.02 = 10,911.28/x
  3. Step 3: Cross multiply
    18,462.46x = 25,480.02 × 10,911.28
  4. Step 4: Simplify right side
    18,462.46x = 278,019,632.63
  5. Step 5: Solve for x
    x = 278,019,632.63/18,462.46
  6. Step 6: Final answer
    x = 15,058.65

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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.