Home / 15,273.43-21,078.21-8,561.23

Finding the Fourth Proportional to 15,273.43, 21,078.21 and 8,561.23

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Solution

The fourth proportional to 15,273.43, 21,078.21 and 8,561.23 is: 11,814.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,273.43 : 21,078.21 = 8,561.23 : x
  2. Step 2: Convert to fraction form
    15,273.43/21,078.21 = 8,561.23/x
  3. Step 3: Cross multiply
    15,273.43x = 21,078.21 × 8,561.23
  4. Step 4: Simplify right side
    15,273.43x = 180,455,403.80
  5. Step 5: Solve for x
    x = 180,455,403.80/15,273.43
  6. Step 6: Final answer
    x = 11,814.99

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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.