Home / 18,380.20-25,364.88-10,315.63

Finding the Fourth Proportional to 18,380.20, 25,364.88 and 10,315.63

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Solution

The fourth proportional to 18,380.20, 25,364.88 and 10,315.63 is: 14,235.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,380.20 : 25,364.88 = 10,315.63 : x
  2. Step 2: Convert to fraction form
    18,380.20/25,364.88 = 10,315.63/x
  3. Step 3: Cross multiply
    18,380.20x = 25,364.88 × 10,315.63
  4. Step 4: Simplify right side
    18,380.20x = 261,654,717.07
  5. Step 5: Solve for x
    x = 261,654,717.07/18,380.20
  6. Step 6: Final answer
    x = 14,235.68

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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.