Home / 18,763.37-25,882.17-12,390.02

Finding the Fourth Proportional to 18,763.37, 25,882.17 and 12,390.02

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Solution

The fourth proportional to 18,763.37, 25,882.17 and 12,390.02 is: 17,090.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,763.37 : 25,882.17 = 12,390.02 : x
  2. Step 2: Convert to fraction form
    18,763.37/25,882.17 = 12,390.02/x
  3. Step 3: Cross multiply
    18,763.37x = 25,882.17 × 12,390.02
  4. Step 4: Simplify right side
    18,763.37x = 320,680,603.94
  5. Step 5: Solve for x
    x = 320,680,603.94/18,763.37
  6. Step 6: Final answer
    x = 17,090.78

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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.