Home / 21,909.35-30,234.48-12,349.26

Finding the Fourth Proportional to 21,909.35, 30,234.48 and 12,349.26

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Solution

The fourth proportional to 21,909.35, 30,234.48 and 12,349.26 is: 17,041.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,909.35 : 30,234.48 = 12,349.26 : x
  2. Step 2: Convert to fraction form
    21,909.35/30,234.48 = 12,349.26/x
  3. Step 3: Cross multiply
    21,909.35x = 30,234.48 × 12,349.26
  4. Step 4: Simplify right side
    21,909.35x = 373,373,425.54
  5. Step 5: Solve for x
    x = 373,373,425.54/21,909.35
  6. Step 6: Final answer
    x = 17,041.74

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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.