Home / 18,643.73-25,728.02-10,145.56

Finding the Fourth Proportional to 18,643.73, 25,728.02 and 10,145.56

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Solution

The fourth proportional to 18,643.73, 25,728.02 and 10,145.56 is: 14,000.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,643.73 : 25,728.02 = 10,145.56 : x
  2. Step 2: Convert to fraction form
    18,643.73/25,728.02 = 10,145.56/x
  3. Step 3: Cross multiply
    18,643.73x = 25,728.02 × 10,145.56
  4. Step 4: Simplify right side
    18,643.73x = 261,024,991.22
  5. Step 5: Solve for x
    x = 261,024,991.22/18,643.73
  6. Step 6: Final answer
    x = 14,000.69

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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.