Home / 15,634.13-21,575.12-8,561.21

Finding the Fourth Proportional to 15,634.13, 21,575.12 and 8,561.21

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Solution

The fourth proportional to 15,634.13, 21,575.12 and 8,561.21 is: 11,814.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,634.13 : 21,575.12 = 8,561.21 : x
  2. Step 2: Convert to fraction form
    15,634.13/21,575.12 = 8,561.21/x
  3. Step 3: Cross multiply
    15,634.13x = 21,575.12 × 8,561.21
  4. Step 4: Simplify right side
    15,634.13x = 184,708,982.41
  5. Step 5: Solve for x
    x = 184,708,982.41/15,634.13
  6. Step 6: Final answer
    x = 11,814.48

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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.