Home / 18,644.13-25,728.47-10,146.28

Finding the Fourth Proportional to 18,644.13, 25,728.47 and 10,146.28

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Solution

The fourth proportional to 18,644.13, 25,728.47 and 10,146.28 is: 14,001.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,644.13 : 25,728.47 = 10,146.28 : x
  2. Step 2: Convert to fraction form
    18,644.13/25,728.47 = 10,146.28/x
  3. Step 3: Cross multiply
    18,644.13x = 25,728.47 × 10,146.28
  4. Step 4: Simplify right side
    18,644.13x = 261,048,131.95
  5. Step 5: Solve for x
    x = 261,048,131.95/18,644.13
  6. Step 6: Final answer
    x = 14,001.63

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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.