Home / 18,739.16-25,860.69-12,371.34

Finding the Fourth Proportional to 18,739.16, 25,860.69 and 12,371.34

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Solution

The fourth proportional to 18,739.16, 25,860.69 and 12,371.34 is: 17,072.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,739.16 : 25,860.69 = 12,371.34 : x
  2. Step 2: Convert to fraction form
    18,739.16/25,860.69 = 12,371.34/x
  3. Step 3: Cross multiply
    18,739.16x = 25,860.69 × 12,371.34
  4. Step 4: Simplify right side
    18,739.16x = 319,931,388.62
  5. Step 5: Solve for x
    x = 319,931,388.62/18,739.16
  6. Step 6: Final answer
    x = 17,072.88

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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.