Home / 18,390.96-25,381.38-10,839.62

Finding the Fourth Proportional to 18,390.96, 25,381.38 and 10,839.62

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Solution

The fourth proportional to 18,390.96, 25,381.38 and 10,839.62 is: 14,959.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,390.96 : 25,381.38 = 10,839.62 : x
  2. Step 2: Convert to fraction form
    18,390.96/25,381.38 = 10,839.62/x
  3. Step 3: Cross multiply
    18,390.96x = 25,381.38 × 10,839.62
  4. Step 4: Simplify right side
    18,390.96x = 275,124,514.28
  5. Step 5: Solve for x
    x = 275,124,514.28/18,390.96
  6. Step 6: Final answer
    x = 14,959.77

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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.