Home / 18,813.84-25,977.96-15,271.44

Finding the Fourth Proportional to 18,813.84, 25,977.96 and 15,271.44

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Solution

The fourth proportional to 18,813.84, 25,977.96 and 15,271.44 is: 21,086.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,813.84 : 25,977.96 = 15,271.44 : x
  2. Step 2: Convert to fraction form
    18,813.84/25,977.96 = 15,271.44/x
  3. Step 3: Cross multiply
    18,813.84x = 25,977.96 × 15,271.44
  4. Step 4: Simplify right side
    18,813.84x = 396,720,857.46
  5. Step 5: Solve for x
    x = 396,720,857.46/18,813.84
  6. Step 6: Final answer
    x = 21,086.65

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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.