Home / 18,390.20-25,380.35-10,838.87

Finding the Fourth Proportional to 18,390.20, 25,380.35 and 10,838.87

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Solution

The fourth proportional to 18,390.20, 25,380.35 and 10,838.87 is: 14,958.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,390.20 : 25,380.35 = 10,838.87 : x
  2. Step 2: Convert to fraction form
    18,390.20/25,380.35 = 10,838.87/x
  3. Step 3: Cross multiply
    18,390.20x = 25,380.35 × 10,838.87
  4. Step 4: Simplify right side
    18,390.20x = 275,094,260.01
  5. Step 5: Solve for x
    x = 275,094,260.01/18,390.20
  6. Step 6: Final answer
    x = 14,958.74

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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.