Home / 18,519.12-25,554.84-10,561.20

Finding the Fourth Proportional to 18,519.12, 25,554.84 and 10,561.20

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Solution

The fourth proportional to 18,519.12, 25,554.84 and 10,561.20 is: 14,573.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,519.12 : 25,554.84 = 10,561.20 : x
  2. Step 2: Convert to fraction form
    18,519.12/25,554.84 = 10,561.20/x
  3. Step 3: Cross multiply
    18,519.12x = 25,554.84 × 10,561.20
  4. Step 4: Simplify right side
    18,519.12x = 269,889,776.21
  5. Step 5: Solve for x
    x = 269,889,776.21/18,519.12
  6. Step 6: Final answer
    x = 14,573.57

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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.