Home / 18,274.29-25,218.72-10,720.75

Finding the Fourth Proportional to 18,274.29, 25,218.72 and 10,720.75

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Solution

The fourth proportional to 18,274.29, 25,218.72 and 10,720.75 is: 14,794.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,274.29 : 25,218.72 = 10,720.75 : x
  2. Step 2: Convert to fraction form
    18,274.29/25,218.72 = 10,720.75/x
  3. Step 3: Cross multiply
    18,274.29x = 25,218.72 × 10,720.75
  4. Step 4: Simplify right side
    18,274.29x = 270,363,535.90
  5. Step 5: Solve for x
    x = 270,363,535.90/18,274.29
  6. Step 6: Final answer
    x = 14,794.75

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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.